Chaco Men's Z2 Classic Sandal Black UPPER: Polyester jacquard webbing upper wraps around the foot and through the midsole for a customized fit. Toe loop for secure fit. Adjustable and durable high-tensile webbing heel risers. Injection-molded ladder lock buckle. MIDSOLE: LUVSEAT PU midsole. Antimicrobial application for odor control. Vegan-friendly construction. OUTSOLE: Non-marking ChacoGrip rubber compound. 3.5mm lug depth Chaco Men's Z2 Classic Sandal Black