Teeter High-Density Foam Roller, 36 inches, 3-Year Warranty EPP Foam Imported Versatile design can be used for posture, balance, self-massage and core exercises Durable, extra firm high-density (1.9 lbs/cu.ft.) EPP foam retains shape & firmness Pairs great with your Teeter Inversion Table for enhanced muscle release and relief of back pain Compact & easy to clean portable mobility tool is ideal for small spaces or workouts on the go 36 X 6 size works both large and small muscle groups; 3-year full warranty