All RumbleRoller materials have been tested by independent laboratories in accordance with the Consumer Product Safety Improvement Act (CPSIA) of 2008 for lead and phthalates. The CPSIA considers these products to be safe for use by anyone, including children. All RumbleRoller products are also latex-free.
RumbleRoller's massaging action can be further intensified by switching from a rolling motion to a side-to-side rocking motion. The bumps provide a wiping-type massage pressure when rolling, but are more resistant to flexion when loaded sideways, and dig in even deeper.
As you roll on a RumbleRoller, its firm but flexible bumps work like the thumbs of a massage therapist to knead and stretch your muscles. This action erodes trigger points, helps restore flexibility, and brings quick relief to common types of muscular pain.