Medi-Dyne StretchRite Improve flexibility and safely relieve tight or sore muscles with the Medi-Dyne StretchRite. Featuring 6 ergonomically designed handgrips that adjust tension, this exercise strap allows you to stretch comfortably, increase your range of motion in stages, and visually monitor your progress. As your flexibility improves, you can increase your stretch by advancing to the next handgrip position. The StretchRite system features a non-elastic strap which makes it easy to perform each stretch properly and effectively. Ideal for stretching and conditioning every major muscle group in your body, including your arms, shoulders, torso, and legs. Includes detailed stretching guide.