Its two-strap design, this sandal is made from ultra-lightweight and highly flexible EVA. It is a shock-absorbing, waterproof, and skin-friendly sandal that is perfect to wear at the beach, or just walking out and about. - Ultra lightweight and highly flexible EVA one piece construction - Easy slip-on design with adjustable buckle strap closure - Open toeMolded footbed for added comfort - Durable outsoleSmooth strap lining for added comfort - Birkenstock branding details - If you are between two sizes, choose the next higher size, because feet are minimally greater under loadSee sizing guide for added help