【Functional efficacy】 Wormwood knee patch can quickly relieve knee problems caused by exercise, middle-aged knee problems, ligament damage and other knee injuries. Enhance and improve the body's immune function. 【Self-heating design】 Put the wormwood knee patch on the sore knee, deep into the painful right muscle. Its heat helps relieve pain and reduce joint stiffness.And the size of the knee relief pain patch is specially designed for joints. 【Natural Ingredients】- The knee pain relief is made of a variety of pure natural wormwood extract and other plant extracts, and pain patch is backed by scientific self-heating patch design to provide deep penetrating pain relief for muscle soreness and joint soreness. 【Use Easily and Widely】- Simply clean the affected skin with warm water, remove the protective film, and then stick the pain relief patch on your painful area，such as knee, waist ,shoulder ect.Enjoy immediate pain relief and ultimate relaxation .Light-weight, breathable and elastic fabric makes your movement without any affected. 【For People】- MQUPIN pain patch offers pain relief for up to 12 hours. Best knee pain relief patches for all ages,and suit for driver, office worker, sportsman, elderly people. Note: Products with electrical plugs are designed for use in the US. Outlets and voltage differ internationally and this product may require an adapter or converter for use in your destination. Please check compatibility before purchasing.