Weight: 200 g (size UK 5.5)boost™'s energy-returning properties keep every step charged with an endless supply of light, fast energyOpen mesh upper for maximum breathability; Synthetic overlays for durable supportCoolever mesh lining for superior moisture and heat exchange between the foot and the outside air; TORSION® SYSTEM for midfoot integrityADIWEAR™ outsole offers the ultimate in high-wear durability; Continental™ Rubber outsole for extraordinary grip in wet and dry conditionsRunner type: neutral; Stack height: 27 mm / 18 mm (9 mm differential)