These effects are from “the Bios Green”. “the Bios Green” technology used on AIR sponges which offer a soft feel, to give rubber Unlimited Power, Unlimited Bounce, and Unlimited Rebound. Most players need the sponge like this.
The UP-UQ version has medium-hard pips for attacking as well as allround play
|Speed||14 / 20|
|Spin||15 / 20|
|Control||18 / 20|