Ultra Flow 2 Gore-Tex, the waterproof trail running shoe that makes endurance feel effortless. Constructed with optiFOAM midsoles for dynamic cushioning, our trademark sole technologies for a reassuring grip in all conditions, and lightweight, breathable uppers for superior comfort from start line to finish. Specifications: Best for Mixed terrain, 2-3 runs per week Cushioning: Maximal Shoe Width: Standard Drop: 6 mm Running Terrain: Mixed terrain Weight: 258 g Lug depth: 4 mm