The Head Graphene XT Radical S tennis racket endorsed by Andy Murray offers finest top quality performance thanks to the head light balanced frame that increases manoeuvrability & provides excellent durability & strength while being light. Graphene XT technology optimises the weight balance & combined with the large head size of 102in 2 (660cm 2) increases your access to power. The racket is strung with the Hawk Touch 17 string that is firm & gives you more control but offers good shock-absorbency to reduce vibrations. The string pattern is 16x 19 to provide more power & spin & the Hydrosorb Pro grip ensures better moisture absorption to improve your grip. It's compatible with the Sony Smart tennis sensor which helps you understand your play.