Yonex Power Cushion SHT-261LX Women's Tennis Shoes (White/Blue) Lightweight P.U. synthetic leather provides durability. Double Russell Mesh provides excellent breathability. This ultra-fine mesh is an extremely lightweight and durable fiber structure that provides eight times more air-exchange, when compared to conventional mesh, for releasing moisture to keep your feet cool and dry. The Super Ergoshape design provides optimal forefoot and toe comfort, and the narrower heel and instep ensure firmness and a comfortable ride. High performance Power Cushion removable insole with which is reinforced in the mid-foot area to control lateral movement.