The head novak 21 junior tennis racket is a great choice for young boys aged 4 to 6 who are beginning playing tennis the racket is very comfortable to use with a shorter 21 535mm length and a low 180g 63oz frame weight the head measures 81in2 520cm2 enabling juniors to hit the ball well and with confidence the racket is named after novak djokovic and comes strung in a 1617 pattern it is made from aluminium and includes a 12 cover