US Open Finalist Daniil Medvedev has played this year with the new Tecnifibre Razor Code White Tennis String with amazing tennis. Thermocore technology is used in the manufacturing process, the polyurethane combined with the base material of polyester and is used during the different construction phases at different temperatures, so that the structure of the rope is soft. Thanks to Thermocore technology, ATP code Razor is softer than traditional poly strings. It has more power and absorbs a lot of shock and vibration and offers significantly improved playing ability. The Razor Code stands for Tecnifiber's controlled polyester strings and adapts very well to the T-shape and the new TF40 storage clubs. Tecnifibre ATP Razor Code is the real new generation of poly string technology and its advantages are not only for hiking players but also for all players looking for more comfort, power and durability. Try thinner gauges for more spin and a more vibrant feel or thicker gauges for longer life.