Description Introducing the Ultrashot 4 tennis shoe! Gives you all the support and durability you need to play your best game. The new 4 gives you a plush feel and great wear. Features the Surge 7.0 midsole technology which gives maximum energy return, and 360 Plantar Chassis Support for excellent lateral movement. Aosta 7.0 durable rubber, Dragguard 7.0 thicker rubber for superior grip and traction. Perfect for hard and/or clay court surfaces.