Big version of the Bump Disc, code 3001. Thanks to its large diameter, 60 cm, it allows a wider use even for two feet. Like the smallest Bump Disc it’s a rubber inflatable disk with many bumps on one side, hence the name. This product is part of the so-called unstable bases with the feauture of the bumps stimulation. The disc is equipped with a needle valve to adjust the pressure depending on the individual needs.