I bought these as a stocking stuffer for my son who requested them for hunting. We live in a big hunting area of the Eastern Shore and my son spends hours with his dad in duck blinds. I don't think they see any ducks, but they are nice and toasty warm (hands and toes) with these warmers. He only had three things on his list and this was one of them! Thanks LL Bean!
I hunt regularly in the winter months often spending the entire day outside. I live in Michigan so that means cold weather. I opened these hand warms around 6:00 a.m. with the temperature around 7 degrees and when I got home around 3:30 in the afternoon, these hand warmers were still very warm! I'm very impressed and will purchase these again. My hunting buddies were complaining out in the field that their hand warmers quit after about 30 minutes.