Babolat Women's Propulse 4 Tennis Shoes White/Blue Synthetic Exceptionally dynamic response with the special Side 2 Side system in the forefoot Optimal tread/glide balance on all types of courts with the Michelin OCS2 outsole Outstanding foot hold thanks to the Lateral Stability System Long lasting heel cushioning and comfort with Kompressor System Perfectly adjusted fit and customized support thanks to the FootBelt and the ergonomic heel counter designed specifically for the foots anatomy