Absolutely fantastic products, I firstly bought one for my partner and he was so impressed I had to get myself one. We primarily use them for motorcycling through the autumn to spring seasons. What a difference they make! Much better than having to worry about chargeable or plug in electric heated vests in my opinion, especially commuting on a low powered bike. You can make them as warm as as minimal as you'd like but even deflated they make a difference as they are great wind barriers. Highly recommend!