The Keen Men's Arroyo III Sandal is a Hybrid shoe for hiking and paddling. When you can't decide between water and land this sandal-meets-shoe is where feet will be happiest. The Upper is more like a sandal, with a quick lace cinch and plenty of holes for water drainage. The Midsole and Outsole is where it's more like a shoe, with Dual-Density EVA foam for cushion, an ESS shank for support and 4mm lugs in a durable rubber for traction. Features of the Keen Men's Arroyo III Sandal Washable, waterproof nubuck Upper repels water Secure-Fit lace-capture system Quick-dry lining for active use Removable, metatomical Dual-Density EVA Footbed Dual-Density, compression-molded EVA Midsole ESS shank offers lightweight support Heel support structure for stability Non-marking rubber Outsole leaves no trace 4mm Multi-directional lugs for traction Cleansport NXT for natural odor control Environmentally-preferred premium leather from LWG certified tannery