It is nice with the weight because it stays in place and really holds the heat. Only downfall is it took along time to get it.
My daughter is 36 years old , and has MS she suffers a lot with cramps and back pain , mostly after infusions. I got it for her after seeing a commercial on TV, in the hopes that it can help her for a Christmas present. I bought the extra large plus one for my wife who has shoulder pain because of the savings. So far they both like it.
One was purchased to help with back pain the other to help with circulation in legs. So far has been great. Only draw back is you can’t put a lot of weight on them for example doesn’t work to but on the back of the chair and then sit back But works great if you can lay down and put it on top and having the multiple massage settings has really helped
I haven’t had a chance to use it yet but can’t wait to get relief from my aching bonds.