Tested by raft guides and athletes for optimal performance, the Chaco Rapid Pro Toe-Loop Sandal lives on the water. The upper's pared-down buckle and the heel riser's 30-percent increase in nylon boost comfort and durability when we're stabilizing in whitewater. Slick foot braces don't get the best of us with this sandal's sticky Vibram Megagrip sole optimizing its wet-surface traction: The Biting Edges at the toe and heel grip relentlessly, the grooved lateral lugs increase grab points, and the micro-siped center lugs disperse water for increased contact surface, while a wrap of forefoot rubber minimizes wear.