Diadora Speed Star K VI AG tennis shoes are designed with the player experience in mind, featuring incredible stability, shock absorption and superior comfort. This update features refreshed cosmetics while maintaining the kangaroo leather upper that provides waterproof protection and durability in a soft environment for your feet. Become a master of the court with the pro look and performance of these shoes.Upper: Kangaroo leather delivers durability, structure, and waterproof support. Abrasion-resistant toe cap provides protection. Padded tongue and heel collar enhance comfort. Lace-up front provides an adjustable fit. Perforations enhance breathability. Midsole: Ortholite® insole is an open cell PU foam that is 95% breathable and keeps the foot cooler inside the shoe. Molded EVA foam provides comfort and support. CCB medial stabilizer controls torsional stability in the arch area, delivering lightness, stability without altering shock absorption. Double Action 2 Plus eliminates negative vibrations in the heel area. Axeler W5 ensures maximum shock absorption during impact with the ground. Power Flow ventilation system grants optimum change of air within the shoe.Outsole: Rubber with special Duratech 5000 wearproof compound for durability and exceptional traction. Forefoot pivot point enhances mobility during changes in direction. Non-marking outsole.