Hyperfeet shoe - F/W 2017 collectionModeled on the Amphibian technique to maximize support during rapid movements. Based on the same structure as the famous Feline patent, the Hyperfeet shoe features a quadri-density sole with a low-density insert under the ball of the foot to maximize impact absorption, and an anti-skid rubber insert to improve grip during quick side-to-side movements.The vamp, which has no internal seams, is designed to offer outstanding comfort during long workouts; while the upper fabric, which is breathable and waterproof, works to keep feet dry.