The RumbleRoller, manufactured by STI, Baton Rouge, La, is a foam roller designed to relieve muscular pain and tightness. The RumbleRoller features specially designed bumps that are engineered to be firm but flexible, and as a user rolls over it, the bumps continuously knead the contours of the body, gently stretching soft tissue (muscle and fascia) in multiple directions. This action erodes trigger points, is designed to help restore flexibility, and brings quick relief to common types of muscular pain, according to the company. The RumbleRoller has a solid core and is made from a resilient grade of high-density EVA foam.

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[Source: STI]