Dunlop Sonic Core Ultimate 132 is the racket of one of the best squash players, Diego Elias ( 1 PSA). It offers the perfect combination of control and power, thanks to the combination of a heart-shaped frame with an enlarged headstock and a 16x19 string arrangement.Powered by Srixon. The new Sonic Core series is made of Infinergy®, by BASF - a super flexible material that is very light and perfectly fits the requirements of the modern gamer. Infinergy® foam developed by BASF, the world's first E-TPU, has significantly improved rebound properties compared to other materials such as EPP, EVA and EPE. Material bounce tests showed a 46% increase in bounce height compared to the original Sonic Core material. When Infinergy® foam is combined with the Sonic Core frame, the result is greater ball speed off the racket for more aggressive shots.Play with maximum comfort. Sonic Core made of Infinergy® is located in two zones at 2 and 10 o'clock, dampening impact shock and reducing frame vibration by up to 37%, resulting in a more comfortable impact feel and reduced risk of injury.