The Babolat Propulse 4 Tennis shoe utilises a concentrated dose of high-tech power for unmatched performance. This is an incredibly innovative all-court shoe that"ll get you playing your strokes and reaching balls with ease.The Foot Belt technology features a tailor made fit with two independently adjustable straps that allow for high precision judgement. Powerful front strap allows for increased instep support whilst the ankle support is taken care of by two side hoops. Heel support is provided by the two ergonomic TPU counters at the heel to allow for even distribution of the pressure exerted by the back strap.The Michelin OCS (Optimised Cell System) provides excellent abrasion resistance and optimised performance on different playing surfaces through a high tech rubber formulation and seamless circular microcells directly inspired by rally racing equipment.