The Dunlop Biomimetic Black Widow incorporates many technologies inspired by nature such as the HM6 Carbon that reduces energy loss and maximises energy return, the aeroskin which provides you with a faster racket speed helping to generate more power and the Gecko-Tac grip that improves precision, control and comfort. Tennis racket length 27 inches. Graphite frame. 102 sq inch/658 sq cm head size. Handle grip size 4.4inches. Unstrung weight 275g. Head cover. Size: H75cm, W35cm, D4cm. Weight 500g.