Beastie Series products expand the RumbleRoller experience to provide more intense, versatile, portable, and affordable massage options. The Beastie is an aggressive massage ball that is the heart of this series.
X firm is 36% firmer than the Original and perfect for experienced users with especially dense muscle tissue that doesn't respond to normal massage pressure.
Beasties Series products don't replace the RumbleRoller, but they are more specific in purpose. Use them to dig deeper into a troublesome area, or to work with greater detail on smaller muscles – e.g. those of the forearms and calves.