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The footprint for the Crest heavyweight tee is 1.72 kg. What could we do to reduce it — can you compare a couple of scenarios?
Read the committed BOM · 5 components
Ranked components by contribution
Modelling three reduction scenarios
Show agent trace · 5 tool calls · 4 iterations
Almost everything sits in one component: the 240 g organic-cotton jersey contributes 1.59 kg of the 1.72 kg — 92% of the garment. Trims and packaging together are under 2%, so changing them barely moves the total.
Two levers worth modelling
Less fabric. Lightweighting the pattern, dropping GSM or improving cutting yield. 10% less jersey saves 0.16 kg — about 9%.
Better fabric. A lower-impact jersey — recycled content, verified mill data, or a cotton/recycled-cellulose blend. A 30% lower factor saves 0.48 kg, about 28%.
Both together takes the garment to 1.08 kg — a 37% reduction.
These are planning scenarios, not revised footprints. The 30% factor is an assumption — test a real candidate fabric and update the jersey component with its measured mass and verified factor before you make any claim.
Committed BOM rev 3Planning scenarios, not claims
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Scenario reductions · Crest heavyweight teeREADY
1 2 3 Baseline 1.72 kg 1.56 kg −0.16 kg · 9.2% 1.24 kg −0.48 kg · 27.7% 1.08 kg −0.63 kg · 37.0%
Remaining footprintAvoided in this scenario
PCF scenario comparisonREADY
ScenarioAssumptionkg CO₂eSavingReduction
BaselineCommitted bill of materials, rev 31.72——
1Lightweight body10% less organic-cotton jersey, all else unchanged1.560.169.2%
2Lower-impact jersey30% lower factor for the main jersey, same 240 g1.240.4827.7%
3Both levers10% less jersey plus a 30% lower factor1.080.6337.0%