6-Month Durability GuaranteeDiadora Women`s S Star K Ace AG Tennis Shoes offer outstanding on-court performance and a traditional fit and feel. This starts with the shoe`s kangaroo leather upper and slightly-wide fit. Overall, the S Star K Ace provides an excellent balance between comfort, stability, durability, and responsiveness.*Developed on a last which reflects the ergonomics of the female foot.Upper: Kangaroo leather and Suprelltech offer comfort and support, while a toe cap with rubber, abrasion-resistant inserts enhances protection and durability.Insole: The removable Ortholite insole enhances comfort, and improves moisture management within the shoe.Midsole: Moulded, expanded EVA offers a comfortable base. CCB technology features a medial stabilizer to control torsional stability near the arch, and does not detract from the shoe`s shock-absorption capabilities. DA Plus technology eliminates negative vibrations in the heel area, and enhances flexibility and pressure distribution near the forefoot. Power Flow technology and Axeler Wi-5 ensure an increased propulsive capacity for the midsole while maintaining comfort and stability.Outsole: The Duratech 5000 wear-resistant rubber compound enhances durability. This model comes with an outsole optimized for performance on hard surfaces and red clay courts.Color: White and Red