The new Speed 3 tennis shoe updates their previous models with all new materials in the upper and midsole region of this shoe. This lightweight addition to the Asics tennis shoe line offers an excellent combination of Asics hallmark running shoe technology with the lateral support needed for tennis. A midfoot Trusstic technology provides improved torsional stability while the forefoot lateral propulsion design allows for responsiveness and control during intense play. Upper FLEXION FIT® UPPER- Proprietary upper which provides form fitting comfort without sacrificing support. P.H.F™ (PERSONAL HEEL FIT) COLLAR LINING- 2 layers of memory foam line the collar and mold to the athlete’s heel, creating a personalized fit. Midsole GEL® CUSHIONING SYSTEM- Attenuates shock during impact in the rear and forefoot, and allows movement in multiple planes as the foot transitions through the gait cycle. TRUSSTIC SYSTEM® TECHNOLOGY- Reduces the weight of the sole unit while retaining the structural integrity of the shoe. Outsole AHAR® PLUS OUTSOLE- Strategically positioned in critical areas of the outsole, this exceptionally durable compound is 50% more durable than standard ASICS High Abrasion Rubber. Weight: 12.4 oz.