PurAthletics Therapeutic Foam Roller - 1.5" x 6" diameter Round. The PurAthletics foam rollers improve alignment and hip mobility, while increasing core flexibility and improving balance. Used widely today by physiotherapists and Pilates practitioners. Foam rollers are an excellent tool for rehabilitation, strengthening of the spine, and aiding in relief of tension along the neck, shoulders, hips and back. Free downloadable Instructional Sheet, & DVD at www.zenathletics.com