Review (3/5): For RA, this is meh.
I ordered this for the joint pain I have in my hands due to RA, especially during the cold months in the Northeast. On receipt, I made fleece mitts to go inside the plastic heating mitts for comfort. This helped some, but I found myself nonplussed by the design (bulky and awkward) and function (none. You can't do anything while wearing these). I ended up finding a "muff" style fleece warmer on clearance at Walmart for $2.50 and took the partial refund I could get on these. They are just uncomfortable and impractical, and the cheap alternative I found has worked much better.