Yonex Power Cushion Aerus 3 LX Women's Navy Blue The lightest indoor shoe from Yonex, the Power Cushion Aerus 3 was designed to keep players connected to the ground and ready to perform. Durable Skin Light wraps around the foot, providing both protection and flexibility for quick movements. Players of indoor games like squash, racquetball, and badminton will love the lightness they feel on the court from the Yonex Power Cushion Aerus 3. Upper: Guard Durable Skin Light provides rubber-like flexibility with the stiffness of hard plastic. Padded heel collar enhances comfort. Toe Assist Shape reduces pressure on the big toe, while also providing support around the midfoot. A YONEX Synchro-Fit Insole construction creates a secure contact between foot and shoe, reducing energy loss through an improved fit.Midsole: Updated Power Cushion+ provides 25% more shock absorption and 12% more repulsion compared to conventional Power Cushion technology. Power Graphite Lite is a graphite plate inserted under the midfoot to increase stability without adding weight to the shoe. Synchro-Fit Insole allows a closer fit between the shoe and foot, keeping power loss to an absolute minimum to achieve smoother movement and quicker footwork. 3D Power Carbon stability channel molded graphite sheet provides 15% more strength against twisting. Outsole: Non-marking Endurance Rubber outsole. The Yonex Round Sole is designed to provide all-around support for quick and smooth footwork.