Adult tennis racket head size oversize racket head size 658 cm head size inches 102 sq in stringing 16 x 19 level beginner type of racket all round racket playing properties comfort balance 330 mm recommended height from 155 cm weight unstrung 270 g racket balance even stiffness 72 ra frame material graphite shape oval length 685 cm length inches 27 season 2017 series babolat game babolat evoke colours black yellow additional