Korkers Unisex TuffTrax 3-In-1 Overshoe Sandal Synthetic buckle closure Quick-release buckle and strap system for easy on/off Applications with Soft Foam (included) sole installed, excels on metal roof surfaces Molded rubber walls at toe, heel, and side provide secure fit Fast and easy industrial hook and loop interchangeable sole system to adapt traction as needed for different work environments Soft foam outsole included, medium density and spiked rubber soles sold separately