Like, I don't know what to call it, but it has like lavender and chamomile and stuff inside of it and you heat it up and put it on your shoulders and neck, I guess more appropriately called like a shoulder wrap or something. I also have an eyemask one that I just keep in a ziploc bag in the freezer for when I get migraines. They're tie-dyed and just generally amazing. I'm wearing my heated shoulder wrap right now. My bf gave them to me over winter break as Christmas presents.