The 3' length of the Progression X-Plode High Density 3 Foot Black Foam Roller is great for all muscle groups such as legs, arms and especially the larger groups in your back.

Foam rollers are used for myofascial release. Myofascial release will help loosen up, stretch out and encourage better circulation through your muscles by massaging the soft tissues of your body.  The black foam roller is a higher density than the blue one.