These pressure-release valves are easy to use; no doctor or therapist is needed, and you can use them yourself. A type of alternative medicine and a method within Traditional Chinese Medicine, it is safe and reliable. For more information about the cupping kit, please scroll down. Clinically proven, cupping therapy reduces inflammation, detoxifies (lymphatic drainage and detoxification), relaxes stiff muscles, and relieves back, shoulder, and neck pain, joint pain, arthritis, fibromyalgia, and bowel obstruction. It also reduces spider veins, stretch marks, and wrinkles. Cupping therapy has been used by athletes for recovery and rehabilitation. The professional cupping kit is made of polycarbonate, a material well-known for its strength, durability, and shatter resistance, lasting longer than any other plastic. This Chinese cupping therapy kit is easy to use and promotes self-healing at home. Simply apply pressure to release the valve.