Zoot Men's OTEC-M, 100% Synthetic and mesh Rubber sole Water-resistant Textile - Is made of water-resistant materials and allows for lightweight breathability and comfort. Mesh structure - For breathability and a lightweight feel. Textile overlays - Provides structural support. BareFit - The internal construction of Barefit technology puts Zoot's seamless and Dri-Lex technologies closest to the skin for exceptional internal feel and long distance comfort. Seamless internal fit to eliminate blister contact points. Tongue and collar - Are connected and they make one single, supportive unit.