First of all, thank you for your products. I use the back warmers and neck warmers a lot and really like them. I thought you might like this story: my two youngest daughters are graduating college this spring. I gave each of them one of your back warmers when they were freshmen. These have become an important element in the house they now share as seniors with three other girls, with everyone putting “dibs on the heat packs” when they have cramps (pretty much a constant occurrence in a house with 5 girls!).