Our REI Z-Strap water shoes provide traction and protection for little feet adventuring about in aquatic environs. Polyester jersey and stretch nylon mesh uppers wrap feet for a secure fit; tongue and heel loops aid in entry. Straps across insteps form a ‘Z’ for a secure, comfortable fit. EVA midsoles offer lightweight cushion for all-day comfort. Durable thermoplastic rubber outsoles supply ample traction and guard against rough or sharp surfaces underfoot.