adidas - Waterra ST W (Dark Shale/Lead/Glow) - Women's: A rugged amphibious design that falls somewhere between sandal and shoe. It dries and drains quickly, is easily adjustable for a custom fit and grips hard and wet surfaces. Mesh nylon upper combines lightweight and breathability. Synthetic upper for fit and comfort. Textile lining. EVA insole for comfort. Adidas Draining System (a.d.s.) midsole for maximum water drainage. PTPP (Push Through Protection Plate) for impact protection. Perforated internal midsole for water drainage and quick drying. High-traction rubber outsole for the ultimate grip. Water grip- exceptional traction in wet and slippery conditions.