Water sport activities require a heavy-duty water shoe. That's why Adidas gave this tough slip-on a strong mesh upper, toe protection, better traction, and an easy hook-and-loop closure for a snug fit. Upper: open mesh nylon for best breathability and quick drying. Midsole: Adidas drainage system (ads) for maximum water drainage. Outsole: water grip - exceptional traction in wet and slippery conditions. Sustainable content: 5% recycled rubber.