✓ HOTTER HEAT WRAP: Improved design.  Made with two layers of cotton fabric.  The heat permeates better via the thinner cotton fabric than fleece.  

✓ UNBEATABLE LARGE SIZE: The amazing, large heating area is unmatched by any portable heating wraps. The heating area measures 18 inches wide and 9 inches tall. It provides heat therapy to the entire back for most people.
✓ MUST HAVE HEAT THERAPY: If you're suffering from Arthritis, Knee Pain, Back Pain, Shoulder Joint Pain, Tendonitis, Neuropathy, Sciatica, Bursitis, Fibromyalgia, Neck Pain, Carpal Tunnel Syndrome, Hip Pain, Tennis Elbow, Golf Elbow, Shoulder Pain, Shin Splints, Chronic Pain, etc. you MUST try this product! The long-lasting heat works well to relieve your pain.
✓ MICROWAVABLE, PORTABLE, REUSABLE & CORDLESS: The back heating pack has long straps: a total of 63 inches long, enough for a large person to tie the wrap around the body. It stays on the shoulder or around your waist when you move around. It weighs only 2.5 lb. Most people will not feel the weight when doing light housework.
✓ EFFECTIVE, EASY TO USE & COMFORTABLE: With the tie-on straps, it is convenient to apply heat therapy to treat your strain or cramps. Use it while doing housework, sitting down, watching TV, or even resting in bed. For rotator cuff injury, this heat wrap can cover the shoulder joint, the chest muscles, and the shoulder blade. It conforms to the body shape very well. No Velcro, so it won’t damage your nice clothing and blankets.
✓ SECTIONED CHAMBERS & LONG-LASTING HEAT: The thermal pad is filled with all-natural flax seeds. The heat can last for half an hour. Constructed with multiple chambers and hand-filled to the perfect fullness, the filling doesn’t shift to one end when standing up. It ensures the heating of all the areas around the injured tissue and increases blood circulation.
✓ FITS SMALL MICROWAVE: Thin cotton fabric allows this large wrap to fold and fit into a small microwave and still make turns when the turntable rotates.

Filled with flax seeds in as many as 10 chambers, the filling stays put when you move around. Just microwave for a minute or so to enjoy the warm moist heat. Or freeze it for an hour to use it as a cold pack. 

The back wrap measures 62", long enough for all sizes. The heating portion measures 9" x 18". Weight: 2.5 lbs.