Designed for river romping with the stability and comfort of a shoe, the Owyhee Sandals stay snug on your feet in swift currents, thanks to Keen's secure fit lace capture system. . Nonmarking rubber outsole with multidirectional lug pattern and razor siping for secure traction on wetdry terrain. Compression molded EVA midsole for shock absorbing cushion and stability. Metatomical EVA molded footbed cradles your foot and provides arch support. Washable polyester webbing upper for quick drying performance. Hydrophobic mesh lining enhances comfort and moisture control. Lace capture system with bungee elastic and cord lock provides an adjustable, secure fit. Footbed and hydrophobic lining treated with Aegis Microbe Shield to help control odor, staining, and deterioration. Toe protection. Keen finds this style runs pretty true to size. Owyhee pronounced oh waa hee. Machine washable on gentle cycle air dry away from heat sources.