Never fear those muddy trails or crossing running rivers when you're wearing the KEEN Ravine H2 sandals! These trail sandals are not only quick drying, but also machine washable! Washable, quick-dry polyester webbing upper. Adjustable heel strap for a preferred fit. Quick-dry lining that removes moisture from your skin while you're on the move. Contoured EVA footbed with arch support and anti-odor technology for all-day comfort and a fresher foot environment. Lightweight EVA midsole for added cushioning and shock absorption. Non-marking rubber outsole.