Inov-8 Men's Trailroc R 255 Trail Running Shoe 100% Synthetic/Thermoplastic Polyurethane Standard Fit Rubber sole Streamlined running shoe in mesh featuring logo emblem at side, translucent synthetic overlays, and lace-up vamp for customized fit Third generation Meta-Shank for impact protection and flexibility Tri-c compound outsole of three different rubbers for grip and durability