This Asics Court FF Novak is packed full of technical features to help you twist and jump for each ball. It's an advanced formulation that responds to the energy of your jumps. This tennis shoe includes a mesh and polyurethane upper for added lightweight stability and durability. It increases flexibility, a wider heel part of the outsole increases stability. They update the highly-technical GEL-Court FF to give players a better on-court feel, in addition to a great combination of quickness, comfort, durability, and support. Synthetic materials and mesh combine with FlexionFit technology for lightweight comfort, breathability, and support. PGuard Toe Protector technology provides added durability in the front of the shoe.