Aktiiv Proterra Leggings

Aktiiv Proterra Leggings score 78/100. Entirely Proterra fabric — 42% plant-based nylon grown from castor beans, 40% biodegradable bio-accelerated nylon, and 18% Roica V550 degradable stretch — with no conventional trim anywhere in the garment. Aktiiv's Proterra fabric is plant-based and biodegradable, and every yarn in it is OEKO-TEX STANDARD 100 certified to Annex 6, Product Class I — the babies-and-toddlers tier, which carries the strictest limit values in the scheme and screens over a thousand substances. Aktiiv also lab-tests non-detect for BPA, PFAS, azo dyes, phthalates, and formaldehyde. On chemical exposure that is a stronger position than most certified-organic activewear, which is certified but rarely lab-tested. What holds the score below the natural-fiber leaders is that this is still a synthetic knit: it sheds microfibres during wear and washing. Most of that shedding breaks down rather than persisting, but the castor-based nylon is bio-sourced rather than biodegradable and behaves like ordinary nylon once released.