1.This pain relief patch provides constant heat for 8-12 hours, relieves fatigue and pain, promotes blood circulation and is effective for rheumatoid arthritis, osteoarthritis, knee pain, tendonitis, stretching and sprains, sciatica and fibromyalgia. It is very effective against all types of pain related pain. 2.Our Knee pain relief patch is made of pure natural wormwood extract, a traditional and original Chinese herbal wormwood. Breathable fleece is comfortable on the skin and provides good breathability. Applied to multiple parts of the body, safe and effective, without side effects, ensures your health. 3.Calm the nerves, slowly relax and replenish combustion. Wormwood knee pads quickly relieve all kinds of knee pain and other related pain, promote blood circulation, alleviate inflammation and pain. Provides up to 12 hours of continuous warm comfort 4.Wormwood pain relief patches can relieve pain in various parts of the body, such as neck, shoulders, knees, ankles, etc. Arthritic hot packs are ideal for commuters, athletes, drivers and seniors. 5.Wash your skin with warm water, remove the protective film and apply arthritis pain reliever to the painful area. The analgesic effect can be achieved. It is recommended to use the patch five times a week. You can also cut the patch to any size that suits the painful area..