With an upper made from a single layer of Airmesh, this water sandal has a speed lacing system for a snug fit with one fast pull..Lightweight, breathable and fast drying like a sandal, but with shoe support, the Adidas Men's Hydroterra Shandal Water Shoe is a hybrid made for outdoor adventure. The EVA underfoot provides cushion but doesn't absorb water and the Speed Grip rubber outsole provides high performance traction on any terrain, wet or dry.IoT-powered.Robust