Super stickiness. 

PF4, the classic rubber in the small ball era, has witnessed dozens of national players' world championships. In 2016, the new PF4 released is more suitable for 40+ T.T. balls, ideal for loop drive with fast attack.  It ha maintained unique stickiness of PF4 while improved the ball speed.  The rubber adopts a new vulcanization process, the sponge is a dense hard sponge and a new type of glue is used between the sponge and rubber.

DIMENSION : 7" X 7.5" X 1/8"