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Allbirds · sneakers
Men's Tree Runner NZ - Blizzard/Verdant Green (Blizzard Sole)
Listing says “Upper: TENCEL™ Lyocell (tree fiber) and recycled polyester blend; Midsole: SweetFoam® sugarcane-based EVA foam; Lining: Merino wool blend; Laces: 100% recycled polyester”
Carbon footprint
12.89kg CO₂e
per pair, whole life · sold in India · made in India
Screening estimateData confidence: medium
Raw materials 13%Production 82%Packaging 3%Distribution 1%End of life 2%
Change anything below and the footprint recalculates. What you change is marked “Stated”. Nothing here is saved.
Sold in
Freight
Materials
| Part | Material (kg CO₂e per kg) | Share % | Mass | Source |
|---|---|---|---|---|
| Upper | Named material | 236 g | Estimated Pin to primary | |
| Midsole | Named material | 202 g | Estimated Contested | |
| Lining | Named material | 54 g | Estimated Contested | |
| Laces | Named material | 14 g | Estimated Pin to primary |
Raw materials13%1.62 kg
Production82%10.58 kg
Packaging3%0.38 kg
Distribution1%0.10 kg
End of life2%0.20 kg
12.43 kgincluding carbon taken up by plants
12.58 kgup to the factory gate
6.78–55.98likely range, 95%
In everyday terms, about the same as driving 76 km in a petrol car, 1,611 smartphone charges, or 0.6 tree-years of absorption.
Is this your product? Replace our defaults with your own materials, energy and supplier data (the biggest lever here: run the factory on solar electricity).Improve this estimate →
How this was calculated
Everything behind the figure, for auditors and the curious. Built to the requirements of ISO 14040/44, ISO 14067 and PACT v3.
Standards checkISO 14040/44, ISO 14067 and PACT v3, requirement by requirement
Standards check · ISO 14040/44 · ISO 14067 · PACT v3Screening estimate: not a full footprint study
ISO 14040/14044
Does not conform
12 met · 1 justified · 1 not met · 1 need reviewer
ISO 14067
Does not conform
18 met · 2 justified · 4 not met · 1 need reviewer
PACT
Does not conform
12 met · 1 justified · 5 not met · 1 need reviewer
All 30 requirements, with clauses
| Requirement | ISO 14040/44 | ISO 14067 | PACT v3 |
|---|---|---|---|
| The study's purpose is written down | Met §4.2.2 | Met §6.3.1 | — |
| No public claim that one product beats another | Met §4.2.2; Amd 1 Annex C | Met §Annex A, Annex B | — |
| The unit is clear, and a partial footprint is labelled as such | Met §4.2.3.2 | Met §6.3.3 | Met §3.2.4 |
| The system boundary is described | Met §4.2.3.3 | Met §6.3.4, 7.3 b | Met §3.2.3 |
| The time period is stated and justified | — | Met §6.3.6 | Met §3.2.3 |
| Product category rules are used where they exist PEFCR Apparel & Footwear v3.1 (EU) applies to this category. This screening estimate does not follow it: it uses MFP screening defaults for processing, use and end of life, so it is not a PEFCR study (ISO 14067 §6.2). Fix: Follow the category rules that apply to this product. | — | Justified §6.2 | Justified §3.1.2 |
| Anything left out is small, estimated and reported | Met §4.2.3.3.3 | Met §6.3.4.3 | Met §3.3.1.2 |
| The data is checked for consistency | Met §4.3.2–4.3.3 | Met §6.4.3 | — |
| Own processes use measured data, or say why not | — | Met §6.3.5 | Met §4.1.3 |
| Every database value is referenced and fit for purpose 11.7 % of emissions use MFP screening proxies (Bio-based EVA (Braskem I'm green, sugarcane), Merino wool fibre): values compiled from cited literature, not a maintained published dataset. Fix: Replace them with a published database value or the supplier's own figure. | Not met §4.3.2 | Not met §6.3.5 | Not met §4.1.3.2 |
| Shared factory burdens are split by the standard rules | Not applicable §4.3.4 | Not applicable §6.4.6 | Not applicable §3.3.1.4 |
| Recycling is counted with the cut-off method | Met §4.3.4.3 | Met §6.4.6.3 | Met §3.3.2.2 |
| Electricity covers its whole life cycle | Met §4.3.2–4.3.3 | Met §6.4.9.4.1 | Met §3.3.2.3 |
| Electricity follows the market-based rules | — | Met §6.4.9.4.4 | Met §3.3.2.3, Box 7 |
| Land-use change is counted and shown separately factor does not state whether dLUC is covered for m2, m3, pk1, pk2. Fix: Use a factor with a separate dLUC result, or supply material.land_use_change with its value, source, year and whether the material factor already includes it. A documented no-LUC statement can resolve an unknown coverage gap. | — | Not met §6.4.9.5 | Not met §3.3.2.4 |
| Biogenic carbon is counted in and out No carbon content for m2, m3, so its biogenic uptake and content are missing. Fix: Supply measured carbon content for these materials. | — | Not met §6.4.9.2, 6.4.9.3, 6.5.2 | Not met §3.3.2.4 |
| Air freight is shown separately, without radiative forcing | — | Not applicable §6.4.9.7 | Not applicable §3.3.2.1 |
| No offsets or avoided emissions | — | Met §6.3.4.1 | Met §3.3.2.2 |
| Latest IPCC warming factors (AR6, 100 years) 100.0 % of cradle-to-gate emissions use AR5, unstated factors; PACT allows only the latest IPCC report once its grace year has passed. Fix: Replace these factors with AR6-characterised data. | Justified §4.4.2 | Justified §6.5.1 | Not met §3.2.2 |
| Fossil and biogenic methane are kept apart Merino wool fibre (9.4 % of emissions) uses an aggregated factor with no gas split. Its livestock methane, which is biogenic, is counted as fossil, so fossil emissions are overstated and biogenic methane is understated; the total is unaffected. Fix: Use a factor that reports biogenic CH₄ separately, such as a supplier LCA with a gas split. | — | Not met §6.5.2 | — |
| Key choices are stress-tested | Met §4.5.3.3 | Met §6.4.5, 6.6 | — |
| Uncertainty is assessed | — | Met §6.6 | — |
| Data quality is scored | Met §4.2.3.6 | Met §6.3.5 | Met §4.2.2, 4.2.3 |
| Limitations are stated | Met §4.5.4 | Met §6.6, Annex A | — |
| Results are broken down the required way | — | Met §7.2 | Met §3.3.1, data model |
| The study report contains every required item | Met §5.2 | Met §7.3 | — |
| The PACT data file is complete Missing or invalid: companyIds, productIds. Fix: Add company and product identifiers (URNs such as urn:mfp:company:acme), the reference period and a PACT unit. | — | — | Not met §6.1; Tech Specs v3.0.3 |
| The primary data share is reported | — | — | Met §4.2.2 |
| Independent critical review No critical review recorded. Fix: Commission an ISO 14071 critical review before any public communication; a panel review is mandatory for public comparisons. | Needs reviewer §6 | Needs reviewer §8 | — |
| Third-party verification of the calculation model The MFP footprint calculation model has not yet been verified by a third party. Fix: Commission limited-assurance verification of the calculation model (PACT v3 §5.3.3, Tables 14–15). | — | — | Needs reviewer §5.3.3 |
These standards apply to studies. This checklist reports the implemented checks; it is not certification or a substitute for independent review. “Needs reviewer” items (critical review, verification of the calculation model) can only be closed by an independent third party.
Assumptions and defaults26 entries, 6 warnings
Warnings · 6
- m2: the Bio-EVA (sugarcane) proxy factor nets biogenic uptake inside a fossil figure. The excl.-uptake total is understated for this line until a supplier value is used.
- m2: Bio-EVA (sugarcane) has no verified carbon content, so its biogenic carbon is missing from the biogenic balance.
- m3: Merino wool has no verified carbon content, so its biogenic carbon is missing from the biogenic balance.
- Grid electricity uses location-based national or regional averages. PACT v3 and Catena-X require the market-based residual mix where contractual instruments exist; supply electricity_factor for contracted or residual-mix power.
- Biogenic carbon content 0.0% of product mass is below 5 %: PACT allows omitting biogenic uptake; both figures are still reported.
- Temporal scores for desnz_2025 use the edition year; their underlying data are older, so those temporal scores may be better than the data deserve.
Assumptions register · 26 entries
- Screening mode: this listing gives no primary data, so every input below that is not a stated material or weight is a named screening default. The result is not PACT-conformant (primary data share 0 %).
- Country of manufacture not stated in the listing; India assumed.
- m1: material share 47 % is estimated from the listing text.
- m2: Bio-EVA (sugarcane) is not in the published factor library; screening proxy proxy_bio_eva_sugarcane (CONTESTED, technological score 4) used.
- m2: material share 40 % is estimated from the listing text.
- m3: Merino wool is not in the published factor library; screening proxy proxy_wool_merino (CONTESTED, technological score 4) used.
- m3: material share 11 % is estimated from the listing text.
- m4: material share 3 % is estimated from the listing text.
- Textile cutting and making loss 15 % of fabric input (PEF-style screening default), sent to landfill.
- Packaging not stated; screening default for footwear: Shoebox 300 g corrugated board, Tissue 20 g paper, recycled.
- Yarn spinning: 0.357 kg fibre × Ring spinning (cotton, ~200 dtex) electricity: 3.4 kWh per kg yarn (van der Velden, Patel & Vogtlander, Int J LCA, 2014).
- Weaving: 0.357 kg × Weaving (air-jet) electricity: 3.6 kWh per kg fabric (van der Velden et al., Int J LCA, 2014).
- Dyeing & finishing: 0.357 kg × Dyeing & finishing (wet processing) energy: 7 kWh per kg fabric (electricity + thermal) (Quantis, Measuring Fashion, 2018 (dyeing & finishing = 36% of apparel GHG, largest stage)); thermal energy is modelled as grid electricity (no fuel split available).
- Footwear moulding, stitching & assembly: Footwear manufacturing & assembly energy: 8 kWh per pair (Derived from Cheah et al. (MIT, 2013): manufacturing ≈ two-thirds of ~14 kg CO2e per running shoe pair, coal-heavy grid).
- Process energy is unmetered screening data (activity uncertainty GSD 1.5–2.0), on the IN grid.
- Inbound transport of materials to the factory is left out of the total, because supplier locations are unknown; its likely size is estimated and reported under the cut-off rule below.
- Distribution route is a screening default (1,000 km road), carrying product plus packaging.
- Cut-off rule: processes are excluded only where no verified data exists, and each exclusion is estimated where possible and reported (ISO 14044 §4.2.3.3.3). Inbound transport is estimated at 0.0350 kg CO₂e.
- Carbon content of pet computed from repeat-unit stoichiometry (0.6250 kgC/kg), pure polymer basis (additives, moisture and finishes ignored).
- Secondary (library) factors are scored at least 3 on technology: PACT v3 Table 12 reserves scores 1-2 for primary data.
- Paper/board carbon: IPCC 2006 Vol.5 Table 2.4 defaults (90 % dry matter, 46 % C of dry, 1 % fossil).
- Use-phase scenario: No energy-using use phase for sneakers.
- End-of-life route shares: MFP screening scenario for India, not PEFCR: textiles and leather goods 80 % landfill / dump, 5 % burning; plastics 60 % / 10 %; paper 40 % / 5 %; metals and glass 50 % landfill; the rest recovered (cut-off). Anchored on CPCB Annual Report on Solid Waste Management 2021-22 (24 % landfilled, 22 % unaccounted).
- Incineration: 100 % oxidation of carbon assumed (IPCC 2006 Vol.5 Ch.5 default oxidation factor for MSW incineration). Energy-recovery credits are not applied under cut-off.
- Aggregated secondary factors are used as published in their own GWP basis (AR5, unstated); only gas-split fuel factors and direct gas emissions are characterised with AR6. Residual inconsistency is typically a few percent for CO2-dominated factors.
- Sources quoted as published figures (not open-licensed datasets): screening_proxy. Replace with licensed or supplier data before external or comparative claims.
SensitivityThe figure with other published choices
Sensitivity analysis (ISO 14067 §6.4.5, §6.6)
The footprint recalculated with each alternative choice: other published factors, the other allocation method, the grid mix instead of a green-power contract, and the use profile at its uncertainty bounds. A large change shows where better data pays off first.
| Line | Choice tested | Baseline | Alternative | Δ kg CO₂e | Δ % |
|---|---|---|---|---|---|
| Lining (Merino wool) | Emission factor | Merino wool fibre | Merino wool, greasy (economic allocation) Wiedemann et al. (2015) Int J Life Cycle Assess 20:463-476, Fig. 1 and Table 5. | +0.197 | +1.5% |
| Lining (Merino wool) | Emission factor | Merino wool fibre | Merino wool, greasy (protein-mass allocation) Wiedemann S.G., Yan M.-J., Henry B.K., Murphy C.M. (2016). Resource use and greenhouse gas emissions from three wool production regions in Australia. Journal of Cleaner Production 122:121-132. Accepted manuscript at QUT ePrints 221487. | +0.006 | 0% |
Every line of the calculation36 lines: activity × factor, with sources
Full inventory
Footprint = Σ activity × emission factor
Every line: how much (activity) × how much CO₂e per unit (factor), with its source. Source labels
Primary sourcePin to primaryContestedComputed
| Stage | Line | Activity | × Factor | = kg CO₂e | DQR | Source |
|---|---|---|---|---|---|---|
| Raw materials | Upper (Polyester, recycled (rPET)) polyester_fibre (100% recycled, cut-off) | 0.277 kg | 2.214 kg/kg | 0.614 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Material use database · 2025 (flat file) |
| Production | Upper (Polyester, recycled (rPET)) to landfill | 0.042 kg | 0.008983 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal database · 2025 (flat file) |
| Raw materials | Midsole (Bio-EVA (sugarcane)) bio_eva_sugarcane (virgin) | 0.202 kg | -1.5 kg/kg | -0.303 | 4/5/1 Low · +492% | Contested Braskem, Updated LCAs for I'm green bio-based portfolio (EF 3.1), 2025 screening proxy · proxies.1 |
| Raw materials | Lining (Merino wool) wool_fibre_merino (virgin) | 0.064 kg | 20 kg/kg | 1.271 | 4/5/2 Low · +492% | Contested Li X., Sun L., Zhang J. et al. (2024) Carbon Footprint of Wool at Cradle to Farm-Gate Stage in Victoria, Australia. AATCC Journal of Research 11(1):37-46, doi:10.1177/24723444231201443 screening proxy · proxies.1 |
| Production | Lining (Merino wool) to landfill | 0.010 kg | 0.4968 kg/kg | 0.005 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal database · 2025 (flat file) |
| Raw materials | Laces (Polyester, recycled (rPET)) polyester_fibre (100% recycled, cut-off) | 0.016 kg | 2.214 kg/kg | 0.036 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Material use database · 2025 (flat file) |
| Production | Laces (Polyester, recycled (rPET)) to landfill | 0.002 kg | 0.008983 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal database · 2025 (flat file) |
| Packaging | Shoebox corrugated_board (virgin) | 0.300 kg | 1.2 kg/kg | 0.360 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Material use database · 2025 (flat file) |
| Packaging | Tissue paper (100% recycled, cut-off) | 0.020 kg | 1.05 kg/kg | 0.021 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Material use database · 2025 (flat file) |
| Production | Yarn spinning grid electricity IN | 1.214 kWh | 0.8135 kg/kWh | 0.988 | 3/1/1 High · +357% | Pin to primary Ember via Our World in Data, carbon intensity of electricity database · 2026 release (2025 data) |
| Production | Weaving grid electricity IN | 1.285 kWh | 0.8135 kg/kWh | 1.046 | 3/1/1 High · +357% | Pin to primary Ember via Our World in Data, carbon intensity of electricity database · 2026 release (2025 data) |
| Production | Dyeing & finishing grid electricity IN | 2.499 kWh | 0.8135 kg/kWh | 2.033 | 3/1/1 High · +554% | Pin to primary Ember via Our World in Data, carbon intensity of electricity database · 2026 release (2025 data) |
| Production | Footwear moulding, stitching & assembly grid electricity IN | 8.000 kWh | 0.8135 kg/kWh | 6.508 | 3/1/1 High · +554% | Pin to primary Ember via Our World in Data, carbon intensity of electricity database · 2026 release (2025 data) |
| Distribution | Road to customer (India) HGV (all diesel), all HGVs, average laden, 1000 km | 0.825 t·km | 0.1252 kg/t·km | 0.103 | 3/5/1 Medium · +309% | Pin to primary UK DESNZ GHG conversion factors 2025, Freighting goods + WTT delivery vehicles database · 2025 (flat file) |
| End of life | Upper (Polyester, recycled (rPET)) to recycling (cut-off: collection only) | 0.035 kg | 0.004686 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Upper (Polyester, recycled (rPET)) to incineration: collection | 0.012 kg | 0.004686 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Upper (Polyester, recycled (rPET)) incineration fossil CO2 (stoichiometric, full oxidation) | 0.012 kg | 2.29 kg/kg | 0.027 | 1/1/1 High · +0% | Computed Carbon mass balance (this engine) computed |
| End of life | Upper (Polyester, recycled (rPET)) to landfill | 0.189 kg | 0.008983 kg/kg | 0.002 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal database · 2025 (flat file) |
| End of life | Midsole (Bio-EVA (sugarcane)) to recycling (cut-off: collection only) | 0.030 kg | 0.004686 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Midsole (Bio-EVA (sugarcane)) to incineration: collection | 0.010 kg | 0.004686 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Midsole (Bio-EVA (sugarcane)) to landfill | 0.162 kg | 0.008983 kg/kg | 0.001 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal database · 2025 (flat file) |
| End of life | Lining (Merino wool) to recycling (cut-off: collection only) | 0.008 kg | 0.004686 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Lining (Merino wool) to incineration: collection | 0.003 kg | 0.004686 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Lining (Merino wool) to landfill | 0.043 kg | 0.4968 kg/kg | 0.021 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal database · 2025 (flat file) |
| End of life | Laces (Polyester, recycled (rPET)) to recycling (cut-off: collection only) | 0.002 kg | 0.004686 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Laces (Polyester, recycled (rPET)) to incineration: collection | 0.001 kg | 0.004686 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Laces (Polyester, recycled (rPET)) incineration fossil CO2 (stoichiometric, full oxidation) | 0.001 kg | 2.29 kg/kg | 0.002 | 1/1/1 High · +0% | Computed Carbon mass balance (this engine) computed |
| End of life | Laces (Polyester, recycled (rPET)) to landfill | 0.011 kg | 0.008983 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal database · 2025 (flat file) |
| End of life | Shoebox to recycling (cut-off: collection only) | 0.165 kg | 0.004686 kg/kg | 0.001 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Shoebox to incineration: collection | 0.015 kg | 0.004686 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Shoebox incineration fossil CO2 (stoichiometric, full oxidation) | 0.015 kg | 0.01517 kg/kg | 0.000 | 1/1/1 High · +0% | Computed Carbon mass balance (this engine) computed |
| End of life | Shoebox to landfill biogenic non-CO₂ (landfill methane) | 0.120 kg | 1.164 kg/kg | 0.140 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal database · 2025 (flat file) |
| End of life | Tissue to recycling (cut-off: collection only) | 0.011 kg | 0.004686 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Tissue to incineration: collection | 0.001 kg | 0.004686 kg/kg | 0.000 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal (open/closed loop, combustion) database · 2025 (flat file) |
| End of life | Tissue incineration fossil CO2 (stoichiometric, full oxidation) | 0.001 kg | 0.01517 kg/kg | 0.000 | 1/1/1 High · +0% | Computed Carbon mass balance (this engine) computed |
| End of life | Tissue to landfill biogenic non-CO₂ (landfill methane) | 0.008 kg | 1.164 kg/kg | 0.009 | 3/5/1 Medium · +271% | Pin to primary UK DESNZ GHG conversion factors 2025, Waste disposal database · 2025 (flat file) |
| Total, excluding biogenic uptake | 12.886 |
ISO 14067 study reportSeparately reported values and report contents
ISO 14067 study report · Carbon footprint (cradle-to-grave, functional unit)
| Footprint per one sneakers delivered and used to the end of its life, sold in India (ISO 14067, incl. biogenic −1/+1) | 12.4299 kg CO₂e |
| Net fossil GHG | 12.7374 kg CO₂e |
| Biogenic CO₂ emissions | 0.0240 kg CO₂ |
| Biogenic CO₂ removals | -0.4806 kg CO₂ |
| Biogenic CH₄ (as CO₂e) | 0.1491 kg CO₂e |
| Direct land-use change | 0.0000 kg CO₂e |
| Aircraft (no radiative forcing) | 0.0000 kg CO₂e |
| Biogenic carbon content | 0.0000 kg C |
| Outbound logistics (reported separately) | 0.1033 kg CO₂e |
| Raw materials | 1.6182 kg · 12.56% |
| Production | 10.5801 kg · 82.1% |
| Inbound transport | 0.0000 kg · 0% |
| Packaging | 0.3809 kg · 2.96% |
| Distribution | 0.1033 kg · 0.8% |
| Use phase | 0.0000 kg · 0% |
| End of life | 0.2040 kg · 1.58% |
| Goal: application, reasons, audience, comparative assertion §6.3.1 / 14044 4.2.2 | Screening carbon footprint shown on the Made for Planet catalogue so brands and buyers can see where a product's emissions come from. Reasons: No company data is available for this listing; a transparent estimate from the listing and published factors shows the likely size and the main stages. Audience: Brands and buyers (business-to-business). The estimate is also displayed on madeforplanet.com, labelled as a screening estimate; it is not an environmental claim the brand may use in marketing. Public comparative assertion: no. |
| Functional or declared unit and reference flow §7.3 a | Functional unit: one sneakers delivered and used to the end of its life, sold in India; reference flow 0.505 kg of product. |
| System boundary §7.3 b | cradle to grave. Screening: materials, processing energy, packaging, distribution, use and end of life. Capital goods are excluded, as is usual for attributional product footprints. Stages modelled: raw_materials, production, packaging, distribution, end_of_life. |
| Significant unit processes §7.3 c | wool_fibre_merino (virgin) (9.42 %); spinning: grid electricity IN (7.32 %); weaving: grid electricity IN (7.75 %); wet_processing: grid electricity IN (15.07 %); assembly: grid electricity IN (48.24 %) |
| Data sources §7.3 d | UK DESNZ Greenhouse gas reporting: conversion factors 2025 2025 (flat file); Carbon intensity of electricity (Ember via Our World in Data) 2026 release (2025 data); MFP screening proxies proxies.1 |
| Greenhouse gases considered §7.3 e | CO₂, CH₄ (fossil and biogenic), N₂O and refrigerant gases (HFCs, SF₆, NF₃) where present; secondary factors cover the gases their publishers include. |
| Characterisation factors §7.3 f | IPCC AR6 GWP100 with climate-carbon feedbacks; secondary factors in their published basis where no AR6 version exists (see gwp check). |
| Cut-off criteria and exclusions §7.3 g, o | Inbound transport of materials to the factory: 0.035003 kg CO₂e (screening estimate: 0.559 kg of materials × 500 km by average lorry (UK DESNZ GHG conversion factors 2025, Freighting goods + WTT delivery vehicles); supplier locations are not known) |
| Allocation procedures §7.3 h | No multi-output processes. Recycling: cut-off. |
| Timing of emissions §7.3 i, 6.4.8 | All emissions and removals counted as at the start of the assessment period; no delayed-emission weighting. |
| Data description and quality §7.3 j | PACT Table 12 DQR: technological 3.11, geographical 1.86, temporal 1.09; per-line scores, confidence and 95 % uncertainty in the inventory. |
| Sensitivity and uncertainty §7.3 k | 2 sensitivity case(s); lognormal Monte Carlo on pedigree uncertainty. |
| Electricity treatment §7.3 l | IN: grid location (India electricity, life-cycle intensity 2025) |
| Interpretation, limitations §7.3 m, Annex A | Climate change only: other impacts (water, land, toxicity, biodiversity) are not assessed, so a lower footprint does not mean a lower environmental impact overall. Secondary factors limit accuracy as shown by the data-quality scores. |
| Value choices §7.3 n | Cut-off for recycling (PACT); economic allocation only above a 5× value ratio; conservative factor where published values disagree (see sensitivity). |
| Scope changes and exclusions §7.3 o | None. |
| Life-cycle stages, use and end-of-life scenarios §7.3 p, 6.3.7, 6.3.8 | Use-phase scenario: No energy-using use phase for sneakers. End-of-life route shares: MFP screening scenario for India, not PEFCR: textiles and leather goods 80 % landfill / dump, 5 % burning; plastics 60 % / 10 %; paper 40 % / 5 %; metals and glass 50 % landfill; the rest recovered (cut-off). Anchored on CPCB Annual Report on Solid Waste Management 2021-22 (24 % landfilled, 22 % unaccounted). |
| Influence of alternative scenarios §7.3 q | factor_choice m3: 1.5 %; factor_choice m3: 0 % |
| Period the footprint represents §7.3 r, 6.3.6 | 2026-01-01 to 2026-12-31: current production as represented by the factor library (each factor's own data year is scored in the temporal data quality) |
| Product category rules §7.3 s, 6.2 | PEFCR Apparel & Footwear v3.1 (EU) applies to this category. This screening estimate does not follow it: it uses MFP screening defaults for processing, use and end of life, so it is not a PEFCR study (ISO 14067 §6.2). |
| Performance tracking §7.3 t, 6.4.7 | Not a performance-tracking study. |
ISO 14067 counts biogenic removals (−1) and emissions (+1) in the carbon footprint; the PACT headline excludes biogenic uptake. Both are shown.
PACT v3 data and biogenic carbonData-exchange values and a downloadable file
PACT v3 data model (cradle-to-gate) and biogenic carbon balance
Download PACT v3.0.3 JSON ProductFootprint in the Technical Specifications v3.0.3 format (decimals as strings). Check the conformance panel before sending it.
| Footprint excl. biogenic uptake | 12.5792 kg CO₂e |
| Footprint incl. biogenic uptake | 12.0986 kg CO₂e |
| Fossil GHG emissions | 12.5792 kg CO₂e |
| Land-use change GHG | — |
| Biogenic non-CO₂ | 0.0000 kg CO₂e |
| Biogenic CO₂ uptake | -0.4806 kg CO₂ |
| Fossil carbon content | 0.1559 kg C |
| Biogenic carbon content | 0.0000 kg C |
| Aircraft GHG (no RF) | 0.0000 kg CO₂e |
| Packaging GHG | 0.3809 kg CO₂e |
| Exempted emissions | 0.2770 % |
| Primary data share | 0.0000 % |
| IPCC characterisation | AR6, AR5 |
| Biogenic CO₂ uptake | -0.4806 kg CO₂ |
| Biogenic CO₂ emitted | 0.0240 kg CO₂ |
| Biogenic C stored in landfill | 0.0525 kg C |
| Biogenic C exported to recycling | 0.0721 kg C |
| Biogenic C in product | 0.0000 kg C |
| Engine / factor library | 1.2.0 / 2026.11-mfp.8 |