From hidden coves to rushing rivers, the light in weight Whisper sandal from KEEN can manage any water-filled day. The quick draw elastic cord lacing system adjusts to a comfortable and secure fit. The washable polyester upper features the odor-reducing Aegis Microbe Shield®. The foot-cushioning EVA molded footbed provides comfort on the go. Weight: 8.80 oz/250.536 g Type: Bungee Styles, Sandals Fit Tip: We find this style runs pretty true to size Lining: AEGIS microbe shield treated hydrophobic mesh Upper: Washable polyester webbing Rubber: Non-marking rubber outsole Aegis Microbe Shield™ treated lining Compression molded EVA midsole Metatomical EVA footbed Non-marking rubber outsole Secure fit lace capture system Secure metatomical strap design Washable polyester webbing upper with Aegis microbe shield™ Women\'s specific fit AEGIS MICROBE SHIELD Aegis Microbe Shield controls the bacteria and fungi that cause odors, stains and product deterioration. Aegis technology is free of environmentally harmful substances. METATOMICAL FOOTBED DESIGN This internal support mechanism is anatomically engineered to provide excellent arch support and cradle the natural contours of the foot.