The yonex nanoray z speed features an isometric head shape providing a bigger sweet spot and more accuracy even on off centre hits it weighs 3u 85 89g and is head light balanced for excellent manoeuvrability the racket comes strung with the bg65 ti white string and is packed with innovative technologies ensuring outstanding performance the snap back zone makes the frame thinner at the midway point at either side of the racket head while the compact frame construction guarantees a fast swin