The key to the wilson pro staff 97 uls tennis racket is in the name uls ultra lightweight spin the frame has a low 270g 95oz weight and is head light which makes for improved racquet manoeuvrability that you can control better the spin friendly 16x18 string bed gives another element to your game letting you get good bite on the ball on every shot enhanced by spin effect technology the head is the same great 97in2 6258cm2 size ensuring access to power which is supported and enhance