Lightest, most breathable Double Layer ever. Patented technology keeps feet drier, cooler and friction free. Dri-Wright inner layer. Dri-Wright outer layer with mesh panel to allow more air flow to keep feet cool. Content: Inner Layer- 70% Dri-Wright, 30% Nylon Outer Layer - 72% Dri-Wright, 24% Nylon, 4% Lycra |