WATER-RESISTANT UPPER: Washable polyester webbing featuring quick-dry lining for active use in and out of the water; PFC-free, durable, water repellent helps shed water and prolong the quality and life of the material on these men’s water shoe TRACTION & PROTECTION: Multi-directional lugs with razor siping help provide superior grip on slippery wet terrain; Non-marking rubber outsoles leave no imprint when walking indoors; Iconic toe bumper offers additional safety to help prevent injury SUPPORT & COMFORT: Lace-lock bungee capture system provides a secure fit while offering quick and easy on/off; Compression-molded EVA midsole for enhanced cushioning FIT & INSOLE: This style runs true to size; Non-removable EVA footbed with added arch support for all-day comfort CARE TIPS & ODOR PREVENTION: All KEEN water shoes and sandals are machine washable; Use a small amount of detergent, wash on gentle cycle and air dry No blisters, no support problems, just cool tan lines and happy feet.