HEAD Women's Prestige Pro Tennis Shoe 100% Synthetic and mesh Rubber sole HEAD Vi-Pod: Integrated in the heel, the Head Vi-Pod Technology absorbs the energy of impact and distributes it to the entire foot, eliminating vibration and maximizing comfort Head Energy Bridge: Strategically placed between the heel and forefoot the HEAD Energy Bridge provides torsional stability and conducts a transfer of energy from the heel to forefoot Head Lateral Control: Integrated in the outsole, HEAD Lateral control is a squared edge of hard rubber that provides lateral stability and enables quick response HEAD Radical Contact: Radical Contact ensures a constant point of traction for optimal stability with maximum flexibility and maneuverability HEAD HyBrasion is a high abrasion compound rubber formula specifically designed for the high stress areas of the soles of the shoe HEAD HyBrasion provides long wearing performance on any playing surface Sole comes with a 6-month warranty