For more insulation, go with the Flow. Whether running in colder temperatures or crossing a stream with your kayak, the Flow provides comfortable barefoot protection. It has a 2mm neoprene upper for thermal insulation and an adjustable strap with hook-and-loop closure across the instep and around the heel for a secure, personalized fit. An EVA footbed provides additional insulation and protection. The camo bottom style features a razor-siped Vibram® TC1 rubber sole. For added slip resistance over a variety of surfaces, choose the black style with a razor-siped Vibram® Idrogrip performance rubber outsole. Please note that while it offers more slip resistance, Vibram® Idrogrip rubber is a marking compound.