Are comprised of mini slats of bamboo. The mini slats are bundled in groups of 5. There are 7 groups of these five bundles. By alternating the directions, a cube is formed. The outer slats of the cube are separated from the inner core by an O ring. The O ring flares the outer slats outward from the core cube, this concept adds a lively bounce. When you call for a big fat back beat, the Super Cube delivers.