Performance & Technical Apparel

Material Composition Assumptions

The default reference product is a performance top (running shirt, cycling jersey, or base layer) weighing approximately 0.15-0.20 kg (150-200 g), composed of:

• Primary fabric: Polyester (PET) knit or warp knit, often with 10-20% elastane (spandex/Lycra) for stretch, approximately 0.14-0.18 kg. Technical knit structures include mesh panels, piqué knit, and interlock knit for moisture management.
• Performance finishes: Chemical treatments applied during finishing, typically including moisture-wicking agents, anti-odor treatments (silver ion or zinc pyrithione), UPF additives, and optional DWR for water resistance. Chemical load approximately 3-8 g per garment.
• Thread and construction: Polyester or nylon sewing thread; some garments use bonded seams (ultrasonic or adhesive) instead of traditional stitching. Labels and reflective trim, approximately 2-5 g.
• Packaging: Polybag, cardboard sleeve, hang tag, approximately 15-20 g.

Performance apparel is lighter per unit than conventional garments but uses higher-value, more processed materials. Multi-step finishing processes (anti-odor, moisture management, DWR, UPF) add chemical and energy inputs beyond those required for basic synthetic garments.

Manufacturing Geography

Performance apparel manufacturing follows the broader synthetic textile supply chain:

• Fiber and yarn: Polyester staple or filament yarn produced in China, Taiwan, South Korea, and India. Elastane yarn primarily from China (Hyosung, Invista licensees).
• Fabric knitting: Circular knit and warp knit machines in China (Fujian, Zhejiang), Taiwan, and Vietnam.
• Dyeing and finishing: China, Vietnam, Sri Lanka, and Taiwan. Performance finishing (anti-odor, DWR) is often done at specialized finishing houses.
• Garment assembly: Vietnam, China, Sri Lanka, Bangladesh.
• Grid intensity (China): 565 gCO2e/kWh (IEA 2024). Default for most of the supply chain.
• Rationale: Dyeing and finishing is the most energy-intensive step for performance apparel because of multiple treatment passes, heated baths, and extended drying cycles for chemical fixation.

Regional Variation

Manufacturing Region	Grid Intensity	Estimated CCI Score	Adjustment vs Default
China (default)	~565 gCO2e/kWh	15.0 kgCO2e	Baseline
Vietnam	~480 gCO2e/kWh	14.1 kgCO2e	-6%
Taiwan	~510 gCO2e/kWh	14.4 kgCO2e	-4%
Sri Lanka	~450 gCO2e/kWh	13.7 kgCO2e	-9%
EU (Portugal)	~300 gCO2e/kWh	12.4 kgCO2e	-17%

Note: Scope 2 represents approximately 21% of total emissions. Material and chemical inputs (Scope 3) dominate, so grid variation has a moderate effect.

Provenance Override Guidance

A supplier or brand may override the default CCI score by submitting:

1. Product Carbon Footprint (PCF) per ISO 14067 covering fibers through finished garment.
2. Recycled content data: Recycled polyester (rPET from post-consumer bottles or textile waste) can reduce fiber-stage emissions by 30-50%.
3. Mill-level energy data for knitting, dyeing, and finishing, including renewable energy procurement.
4. bluesign certification or OEKO-TEX STeP certification covering chemical and energy management at production facilities.
5. Higg FEM verified data from SAC-participating facilities.
6. Performance finish chemistry data: Bio-based or non-fluorinated DWR, plant-derived anti-odor treatments may have different emission profiles.

Methodology Notes

• CCI score of 15 kgCO2e represents a conservative estimate for a polyester-elastane performance top. Limited garment-specific LCA data exists for technical apparel; the estimate is constructed from PlasticsEurope fiber data, Higg MSI material benchmarks, and industry-standard dyeing/finishing energy intensities.
• Scope breakdown: Scope 3 dominates at 77% (11.5 kgCO2e), driven by polyester and elastane resin production, dye and chemical manufacturing, and transport. Scope 2 is 21% (3.2 kgCO2e) from knitting, dyeing, finishing, and garment assembly electricity. Scope 1 is 2% (0.3 kgCO2e).
• Confidence: Low because performance apparel is a diverse category with limited published peer-reviewed LCA data. Emission profiles vary significantly by fabric weight, construction type, and number of performance treatments applied.
• Functional unit: One performance top (~0.18 kg), cradle to gate.
• Comparison: Performance apparel scores higher per kg (~50 kgCO2e/kg) than basic polyester garments (~25-30 kgCO2e/kg for a comparable weight shirt) due to multi-step finishing processes and specialty chemical inputs. However, per-unit emissions are moderate because the garments are lightweight.
• Data gaps: The contribution of specialty finishes (anti-odor, DWR, UPF) to total garment emissions is poorly quantified in the literature. These treatments involve small quantities of high-value chemicals whose production emissions are not well characterized.