Design: A Matryx piece on the forefoot gives extra support for lateral movements Rubber forefoot protection Active Flexion the shape and composition of the materials used for the sole are segmented into 9 key pressure points for maximum responsiveness Thermo Plastic Rubber (TPR) tube compression system positioned beneath the heel for exceptional shock absorption In-Shoe Comfort: OrthoLite® insole is molded to hug the shape of the foot, properties of the foam composition make for exceptional comfort, breathability and durability Durability & Traction: Michelin Premium rubber is the most durable composition ever developed, It offers increased resistance and optimal grip to meet the extreme demands of tennis footwork