Upper: Foot Belt technology provides tailor-made foot support for the perfect foot-shoe synergy. Foot Belt technology provides instep support, ankle support, and heel support. Replica of Andy Roddick's signature on back belt. A high performance, Cell Shield upper made with cellular material stands up to even the toughest abrasion while providing excellent comfort. The cells are smaller and more densely concentrated in high-wear zones to guarantee optimal effectiveness. A mesh lining keeps the foot very well ventilated. Padded air mesh tongue and padded heel collar provide increased cushioning and maximum breathability.

Midsole: The Kompressor System is an innovative heel system made with EVA cushioning and TPR filled tubes. When the heel hits the ground, the shock is equally absorbed by the entire Kompressor system for consistent, dynamic response. Removable OrthoLite® insoles provide great, long-lasting comfort from the first wear all the way through play.

Outsole: Developed in collaboration with Michelin's R & D team, Babolat outsoles are specially designed to give players the highest performance over a longer period. The outsole tread patterns are designed to offer optimized traction and ground contact on any surface. The Optimized Cell System (OCS) employs microcapsules that optimize energy transfer during the compression-and-release phase and 20% more contract surface than traditional chevrons.

Exclusive 4-Month Outsole Guarantee (thru Holabird).