The Propulse 2 is Babolat's top of the range, ultra-innovative shoe. As worn by Andy Roddick on tour, these shoes are designed for comfort and durability; no compromise... •Created exclusively for the new Propulse shoes in partnership with Michelin, the new OCS (Optimised Cell System) is made of seamless circular micro-cells for the most durable shoe in the market with 20% more surface contact... •New Foot-Belt system recognises the complexity of human feet and recognises the need for optimised support. This offering has two independent strap for instep and ankle support at your desired level...