K-Swiss Hypercourt Tennis Sneaker Shoe - Mens Synthetic Upper: Synthetic leather and canvas for overall comfort and support. The durawrap technology helps to prevent from excessive toe-dragging and Stay-Tied Laces stop your shoes from coming untied easily so you won't be distracted! Heel Grip lining stops the foot from slipping while you play. Midsole: K-Swiss incorporated Guideglide to give you more stability and comfort as you compete hard. K-EVA and ortholite included for another level of support and stability. Outersole: DragGuard located in the high wear areas of the shoe make this shoe more long-lasting. Aosta 7.0 rubber is used to give you increased durability from heel to toe.