These body warmers heat up in just minutes. They last for 16-20 hours and heat up to 150 degrees with an average temperature of 130 degrees. Place within your sleeping bag or under clothing for optimal results.
Posted by Unknown on 12th Feb 2010
Man let me tell you something. Get a few of them if your going to go do some winter camping. I put one in my bag last month when camping up here in the north and it really helped to keep me warm all night long. The body warmers are a most from now on in cold winter camping for me