Invention Grant
US09403055B2 Exercise device 有权
运动器材

Exercise device
Abstract:
Exercise device (1) comprising an exercise ball (10) and a cover (20) for housing and completely surrounding this ball (10); the cover being designed to couple, in use, in a substantially form-fitting manner to the outer surface of the shell (11) of the exercise ball (10) and being provided with a respective closing device (25) that can be selectively opened to allow the exercise ball (10) to be inserted into and extracted from the cover.
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