Wu Yang Brand Pain Relieving Medicated Plaster is based on a traditional recipe used by martial arts practitioners to help recover from injuries incurred during practice sessions.
In an easy and convient sheet, they are quick to apply for a variety of uses including arthritis, back and neck aches, pains, sprains, and muscle spasms. They can be cut smaller to fit whatever area of the body is needed 
Each Patch is 3.9x2.75" and they come in packages of 4 plasters
Do not use on open wounds, damaged skin, if irritiation develops, avoid contact with eyes and mucus membranes, in children under 2