Keen's iconic hybrid sandal updated with a heel lift and a women’s-specific fit. Lightweight and breathable upper design keeps feet cool but protected This river sandal has an adjustable bungee style lacing system made of recycled PET plastic bungee cord Cushioned footbed with contoured arch for midfoot support Compression molded EVA midsole Aquagrip rubber outsole with Aqua Stop zonal siping provides maximum traction on wet and dry surfaces