The Covalent is coveted by watermen for its bomber construction and easy-going demeanor. The vegan sandal features a 3-point synthetic nubuck thong construction that's supportive. Durable nylon toe post is comfortable between toes. Supersoft sponge rubber footbed pads the foot; high-density EVA layer yields a precise gluing bond, minimizing blow-outs. Anatomically-correct EVA arch and heel lend support in all the right places. Patagonia high-abrasion EVA outsole is durable and provides traction for slick conditions.