Icebug Men's Anima3 Bugrip Studded Traction Running Shoe 100% Knitted Textile/Protective Polyurethane/Thermoplastic Polyurethane Imported Rubber sole Lightweight running shoe featuring secure lace-up vamp and easy-on loop at counter Cushioned injection-molded EVA midsole Narrow, low-profile heel for control Traction BUGrip outsole with 19 carbide studs RBX grip outsole Icebug shoes run approximately 1/2 shoe size small.