- Materials: FlexAble™ 50% polyamide, 43% polyester, 7% elastane, 4-way stretch double weave fabric with durable polyamide face and polyester backside for enhanced moisture wicking action, 275 g/m², bluesign® approved. Reinforcement: Keprotec® 73% Cordura® polyamide, 14% polyurethane, 13% Kevlar weave, 240 g/m², bluesign® approved