Playability: This Top end tennis racquet for men and women offers great feel and controllable power to Advanced players. Exclusive use of Graphene - The strongest known material in the shaft and frame of racquet. Technology: New Graphene 360+ technology with innovative spiralfibers for an enhanced flex and cleaner feel upon impact with ball. String pattern: Wider Cross-Strings (Open 18x20 string pattern) for added Power and Spin. Stringbed: Superactive Stringbed For Increased Power and Control In a Fast Game. Specifications: Material - Graphite | Weight (Unstrung) – 310 grams | String Pattern - 18/20 | Head size - 645 sq.cm. | Balance – Head Light | Length - 685 mm / 27.0 in | Grip Size - G3 | Beam – 23 mm | String Tension - 48-57 lbs | Playing Level – Advanced | Ideal for – Tournament Players Speed series is endorsed by Novak Djokovic and Speed Pro 360+ is a powerful tennis racquet with excellent feel and spin-friendly control. The HEAD 360+ SPEED PRO is slightly lighter than the PRO and provides the silo's characteristics in an easier-to-handle version for a wide range of players. It comes with the Graphene 360+ technology, a combination of Graphene 360's energy transfer and innovative spiralfibers for an enhanced flex and clean impact feel as well as a 18/20 string pattern for enhanced spin during fast rallies. The 2020 Speed Pro not only feels more solid against big hitting opponents, it does a better job driving the ball through the court. It also gives enough spin-potential to bring the ball down hard. The Speed Pro is available in a new design with an asymmetric combination of matte and glossy white and glossy black. The Speed Series is endorsed by Novak Djokovic.