Built with professional river guides in mind, the Chaco Rapid Pro Toe-Loop Sandal mixes comfort with grippy outsoles for great river running performance. The LUVSEAT footbed cradles our feet for all-day support-like all Chaco sandals-but it's the Vibram MegaGrip tread that really stand out when wading on wet river rocks and negotiating steep banks when we're out of the water. This is the sandal that we're wearing for our extreme water adventures.