Icebug Men's Zeal RB9X Traction Running Shoe 100% Nylon Textile/Polyurethane Imported Rubber sole Lightweight nylon upper with half quick-dry mesh lining for breathability and comfort Lace-up vamp for secure fit Dual-density midsole for cushioning Rubber 9 Extreme outsole provides friction for off-trail, rough terrain and wet or muddy conditions