don't worry this is all new for me to lol!I have learned the + and - signs if you click on the plus you can give others a free credit or if you like a comment you can click on it to let them know you liked it.ok so you can just pump it to wear it's comfortable to your neck.I have alot of migrains and seen it's suppose to help with that.Might have to give it a try.Thanks now i can click on your box.