Weight: 208 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; Mesh support panels on midfoot; Clean, slim-fitting shapeTORSION® SYSTEM for midfoot integrityADIWEAR™ outsole offers the ultimate in high-wear durability; Continental™ Rubber outsole for extraordinary grip in wet and dry conditionsRunner type: stable; Stack height: 29.3 mm / 19.3 mm (10 mm differential)