I received one of these eye masks from a friend as a gift and loved it! It is so warm and soothing for your eyes or anywhere else you need a little help with aches and pains. They stay warm for almost an hour! After using one for a few minutes on my eyes, I was able to use the same one on my sore arm and then my husband used it on his shoulder.... They don't have too strong of an odor. The box is very nice, too, for storage.