Small Multi-Purpose Portable Chiropractor: This device is 3 inches in diameter and 24 inches long. The best use for this product is to relieve neck pain and stress. By rolling your neck on this product you will be able to stretch it out relieving the aches associated with stress. The cost of this is $39.99 + tax ($5.00 for shipping) and has a lifetime warranty. Just send us a picture of the broken product and we will send you a new one for FREE!