Dunlop aerogel 4d pro tennis rackets the dunlop aerogel 4d pro tennis racket is ideal for advanced players and players with a mediummoderate swing the racket is constructed using a graphite4d braided material to ensure a lightweight finish and helps make it easier to swing the racket when on the court tennis racket unisex adults graphite4d braided construction swing type mediummoderate head size 100 sqinch string pattern 16 x 19 un strung weight 270g 9