A streamlined design, women specific fit, and a light and airy upper make the Sage sandals a reliable choice for waterfront adventures.. . AriapreneTM and synthetic lightweight upper with a hydrophobic mesh lining a hypoallergenic alternative to neoprene. Closed toe for added protection. Nonmarking rubber outsole with razor siping keeps shoe stable both in and out of water. Metatomical EVA footbed with metatarsal ridge for added underfoot support. Secure fit lace system lets you adjust to the perfect size. Cleansport NXTTM natural odor control keeps shoes fresh after a day in the water. All Keen water sandals are machine washable air dry.