2 SIZES AVAILABLE FOR ALL YOUR NEEDS – 24Inch, and 13 Inch. The 13Inch is small enough to fit in most gym carry bags – ideal for travel. Muscle Rollers are great for Back Pain and Back Exercises. Great for core stabilization, balance, and stamina. FOAM EXERCISE ROLLER HELPS PREVENT MUSCLE INJURY – Perfect for positioning, balance, postural and muscle re-education, spinal stabilization, body awareness and coordination, and ranging and strengthening activities FULL 10 YEAR LIMITED! – Using your own body weight let the roller do a MyoFascial release to provide Ma