The Yonex Power Cushion 308 CLAY COURT is the latest generation Yonex tennis shoe for 2012 and continues the tradition of lightweight performance, in a clay-friendly outsole pattern. The 308 offers new cosmetics with all of the performance of the last generation SHT models. Tough Brid cushioning lasts longer and is more responsive than traditional EVA. New stability outrigger for improved lateral stability without adding weight. Outstanding cushioning, lightweight, and improved stability, the Power Cushion 308 is an all-around performer! Worn by Stan Wawrinka.Color:Metallic Blue/YellowUpper: synthetic leatherOutsole: Round Sole, Endurance RubberMidsole: Super EVA, Power Cushion, TPU, Graphite sheetYONEX POWER CUSHION: Drop an egg onto the Power Cushion and it will bounce back without breaking. Yonex Power Cushion Technology responds to quick and sharp movements by transforming shock into kinetic energy. Furthermore, this unique characteristic reduces muscle fatigue on your legs, so you are fresher going into the fifth and final set.YONEX ROUND SOLE: Round Sole provides a feeling of increased comfort while maximizing the transfer of body energy into every shot. With Round Sole positioned on the side and heel of the shoe, it prevents any awkward landings and permits quick, smooth footwork around the court.Average weight: 14.3 oz. (Size 10.5)