The Keen Whisper Sandal. This little beauty as the name would suggest, is a lovely light weight water sandal that has enough guts for any water-filled activity. It features Keens quick draw elastic cord lacing system with a womens specific shape, for a secure & comfortable fit. The hydrophobic mesh lining & waterproof fabrics result in a faster drying time if you do use these as a water sandal. They can also be machine washed on a gentle cycle using a small amount of mild detergent, we would recommend Nikwax, & then allow to air dry. To ensure all day comfort Keen have used a Metatonomical EVA moulded footbed for great shock abortion & cushioning. Metatonomical is a big fancy name that has been given to the internal support mechanism, it is anatomically engineered to provide excellent arch support that cradles the natural contours of the foot. It also has a shank that runs through the inner of the sole unit for added stability. Compression molded EVA midsole Hydrophobic mesh lining Metatomical EVA footbed Non-marking rubber outsole Secure fit lace capture system Internal stability shank Washable polyester webbing upper Womens specific fit