Light Hiking Protection Level 2: all weather product that is designed for use on day hikes on flat and varied terrain. Lightweight padding in the heel and ball protects the foot from shear and impact forces and helps prevent painful blistering. Lace pad protects the top of foot against boot lace pressure. Spandex and low density padding in the arch create a snug fit. Ventilation panel enhances wicking. 62% CoolMax, 19% THOR·LON Acrylic, 14% Nylon, 5% Spandex. Sold as a 3 pair pack.