Design: Best for: All-day wear, Day hikes, Water activities, Light hikes Easy hook-and-loop closure comes on and off quickly and gets the fit just right Verifiable REPREVE(R) polyester yarn by Unifi(R), these sandals save 4 plastic bottles from ending up in landfills In-Shoe Comfort: The Universal Strapping System(TM) supports your foot and stands up to abuse Lined with Ariaprene(R) for increased comfort against the foot Molded EVA midsole with heel cupping and arch cookie for added support Durability & Traction: Quick-dry webbing made from recycled plastic using traceable VIBRAM(R) Mega Grip outsole has the optimal balance of durability and sticky traction for wet and dry surfaces Additional Details: Half pair weight for size W7/M9: 8.25oz