The Speed Star K V provides all-around comfort and performance for the serious tennis player. The Kangaroo leather upper is lighter and stronger than standard leather, offering fast-feeling support and durability. The Axeler Wi-5 Propulsion shank maximizes shock absorption and energy transfer when your foot makes contact with the ground. Power Flow technology brings ventilation from up underneath your foot to keep you extra cool and dry. The durable rubber outsole has a modified herringbone pattern that's designed for use on all court surfaces, and it's backed by a six month durability guarantee. This is an excellent all-around performance shoe for the competitive tennis player.