Chaco Men's Zvolv 2 100% Synthetic Imported Rubber sole Polyester jacquard webbing upper wraps around the foot and through the midsole for a customized fit Toe loop for secure movement Adjustable and durable high-tensile webbing heel risers Luvseat polyurethane midsolewith extra-soft polyurethane compound and Vegan-friendly construction Z and volv outsolewith non-marking Eco tread 25 percent recycled rubber compound with 3 millimeter z-inspired lugs