Lighter than most road and trail running shoes less than 11 oz, they make running uphill as much fun as they make running downhill and with less body fatigue. The midsole foam is 30% softer than the material used in traditional running shoes, and there is 2.5 times more volume than in most running shoes. The extra cushioning dissipates up to 80% of the shock associated with heel striking when running and allows for as much as 20mm of compression in the heel, plus extra protection allowing you to soar over any surface. A 4mm heel to toe drop and rockered profile creates a unique rolling motion that encourages proper form by allowing a runner to easily strike the ground near the midfoot. The unique, patented bucket seat is recessed up to 20mm within the midsole unit so as to best position your foot for optimum control. This high degree of control also ensures you maintain responsive contact with the ground at all times. The outsole platform is 30% wider, providing a stable base and counterbalancing the excess height a voluminous midsole. Coupled with thermo-polyurethane reinforcements, provides enhanced structure and support.