adidas - Hellbender (Metal Grey/Deep Oxide/Silver/Black/Metallic Silver) - Men's: Designed for the serious water sport enthusiast emphasis on maximum traction, drainage, and comfort. Synthetic upper for long comfortable wear. TorSion System creates stability and control. Allows natural rotation between the rear foot and the forefoot, provides midfoot support and improves surface adaptability. Z-TraXion - more grip, less weight. Z-shaped lugs maximize ground contact with less lugs, reducing shoe weight, and better multidirectional grip for trail running. A great shoe, pick up a pair today.