These are so cool!! I’ve given many to my friends and everyone says they get energy when they wear them. I’m a huge fan of herbal health and I find these interesting. Pretty simple to use- you place the center circle over your belly button and wear up to 6 hrs. Once a day. I have for you here a brand new and sealed set of 15. WARNING- as with all herbal treatments and external products- listen to your body. Anything touching your body can cause an allergic reaction at any time. I do have one friend these turned her skin red for a while after she took them off. And one friend thinks they tingle. Be cognizant always and do what your body tells you.