The Zero Pad's plush surface material and 3/4" thickness [19.05mm/1.90cm] gives drummers a pad that has minimal rebound as compared to a traditional gum rubber pad - making the player focus, fine tune, and strengthen their sticking mechanics and technique. The single-sided Zero Pad measures 11" [279.4mm/27.94cm] in diameter and is quieter in volume due to the nature of the pad material. Covering the back side of the wood base is a thin layer of soft rubber to prevent slipping when placed on a surface. Each Zero Pad also includes a free printed Vater Must Know Rudiments chart, as outlined by the Percussive Arts Society, which is essential for any drummer's lesson binder or practice room.