Features of the Keen Men's Uneek II Slide Removable EVA Footbed with contoured arch for added midfoot support PU Midsole offers resilient cushioning Higher-traction rubber Outsole Non-marking rubber Outsole leaves no trace Eco anti-odor for freshness Recycled Pet plastic cord Upper forms to the foot Microfiber lining Minimal waste construction Razor-siped Outsole channels water away for exceptional grip