Our Knee Relief Patches Kit contain wormwood, saffron, dried ginger. It can activate the muscles and bones, and effectively relieve the pain of the lumbar and cervical joints. Its use is simple: Simply wash the afflicted skin with warm water, peel off the protective film, and apply the self-adhesive film to the painful area. Help to relieve joint pain caused by air conditioning room, knee discomfort caused by sedentary office, lumbar spine, cervical spine pain.