Runner type: neutral boost™ is our most responsive cushioning ever: The more energy you give, the more you get adidas Primeknit upper wraps the foot in adaptive support and ultralight comfort TORSION® SYSTEM between the heel and forefoot for a stable ride; Supportive cage wraps around the midfoot for a lockdown fit FITCOUNTER moulded heel counter provides a natural fit that allows optimal movement of the Achilles Continental™ Rubber outsole for extraordinary traction in wet and dry conditions; STRETCHWEB rubber outsole flexes underfoot for an energised ride Weight: 310 g (size UK 8.5) Midsole drop: 10 mm (heel: 29 mm / forefoot: 19 mm) Textile and synthetic upper / Textile lining / Rubber outsole Get ready for the run of your life with the Ultra Boost Men's Running Shoe from adidas. An ultra-cushioned boost underfoot combines with the foot hugging upper for a superb feel and fit, mile after mile. With the push-off from each step, you'll receive a boost of energy for a fast, light ride with cushioning that doesn't pack down over time. The Primeknit upper adapts to the changing shape of your foot as you run, and a supportive cage secures a lockdown fit.