Proprietary material is the exact same formula used by NASA on the ISS for sensitive electronics protection

All-day comfort of triple-layer face foam with moisture wicking polar fleece lining

For less additive

a rubber underlay designed to last longer while also having our Desert Grip tread on the outsole for better grip and a polyurethane G6 insole for impact resistance with custom artwork by Jon Dickson himself

Fabric: 100% Merino Wool

Stance Women's Heart Crew Sock Canvas Size:S Proprietary material is the exactOur fan favorite crew height patterns are designed with extra comfort in every step, featuring a seamless toe cap, targeted cushioning and stay put fit.