The prince thunder dome 100 tennis racket ensures increased control over shots thanks to its mid plus 645cm2 head and has a head light balance for easy manoeuvrability the racket uses morph beam technology for added stability and power and an open 16x19 string pattern gives you access to more spin it is strung with a nylon string for durability and feel and features durapro grip to deliver a combination of tack and absorption a full length headcover is included for rackets protection