“I purchased a women’s medium heated vest a little over a year ago and it just recently stopped working. I didn’t want to pay for a brand new one so I got the open box men’s medium. I definitely should have sized down to a small but it still fits fine. I live in a cold climate and I wear this vest all the time. It warms me up wonderfully! I got two batteries so I can charge one while wearing the other! Best investment!!”