Runner type: stable Dual density boost™ cushioning on the medial side provides ENERGISED STABILITY for a smooth, responsive ride adidas Primeknit upper wraps the foot in adaptive support and ultralight comfort; ARAMIS-inspired build for an improved fit; FITBAND helps keep foot in place while allowing natural flexibility TORSION® SYSTEM between the heel and forefoot for a stable ride; Comfortable textile lining FITCOUNTER moulded heel counter provides a natural fit that allows optimal movement of the Achilles STRETCHWEB rubber outsole flexes underfoot for an energised ride Experience the feeling of your best-ever run every time you lace up your shoes. These running shoes from adidas are built with an ultra-responsive boost midsole that absorbs the power from your footstrike to release it at push-off for a light, super-energised ride. The adidas primeknit upper holds your foot in comfort through each phase of the gait cycle, while a grid-like outsole flexes to adapt to the way your foot hits the ground.