US Patent 10905915 Balance platform with convex base

A balance platform configurable to have a second member with a flat side on the ground and a curved side facing upwards, and a first member that rocks on the second member. The elements of this balance platform are interchangeable in position to create different parameters of movement based on the different configurations. This invention may be used as a very easy balance platform for work or when upper body stability is desired. Additionally, there are different curvatures and combinations of curvatures of the surfaces that may be combined to adjust difficulty of balancing.