boost™'s energy-returning properties keep every step charged with an endless supply of light, fast energyTORSION® SYSTEM for midfoot integrity; Moulded 3-Stripes and heel counter for support and optimum heel hugSock constructionadidas by Stella McCartney woven badge on tongueSTRETCHWEB rubber outsole is lightweight and elastic, adapting to the ground for stability and working strategically to optimise the unique properties of boost™ from touchdown to push-off