Specifications ● Set includes: Main unit, air pump ● Size: (approx.) 33cm diameter x 6-7cm height ● Material: ABS ● Weight capacity: Approximately 200kg Balance disc for easy exercise & core training! You can stand on the disc to train your core, or simply sit on it on a chair as a cushion for easy exercise♪ The protrusions on the surface provide a pleasant stimulation. It's compact, so it's recommended for those who want to exercise but find balance balls take up too much space. Unused, but the box is crushed. Will be shipped in a bag as is.