Features of the Keen Men's Rapids H2 Sandal Lace-lock bungee system Eva Footbed with arch support for all-day comfort Eva Midsole for lightweight cushioning Non-marking rubber Outsole leaves no trace Eco anti-odor for freshness Washable, quick-dry polyester webbing Upper Quick-dry lining for active use Razor-siped Outsole channels water away for exceptional grip Adjustable heel strap for a custom Fit