With a Co-Polyester core ensuring a firm feel & Thermocore technology enhancing elasticity & flexibility, the Tecnifibre Pro Red Code Wax tennis string is a great choice for players seeking a combination of spin, snapback & durability. This monofilament string provides less friction & maximum lubrication for easy stringing thanks to polyethylene wax impregnated into the polyester matrix. It is an official string of the ATP World Tour & comes in a 200m (656ft) reel.