describe:1. We are not the cheapest, but we are the best: Unlike other cheap massage cups on the market, our product uses stronger and higher quality polycarbonate material, so the massage cup will almost never break. It's also resistant to marks and scratches and can withstand daily wear and tear. The treatment cup is shockproof and heat-resistant, and can be sterilized with boiling water. The material is safe and friendly to the skin and does not contain any toxic or harmful fillers, so you can use it with confidence.2. Genius and unique electric pump: We are one of the few sellers in the market who have electric pumps. With this smart cupping device, you don't need to use the dangerous traditional method of fire, nor do you need to press hard manually, the one-button operation is super easy to use. The silicone nozzle can produce suction, just like suction therapy, and can be used to massage and scrape any part of the body. Built-in lithium battery, USB connector, can be used continuously for 60 minutes after fully charged3. Stay healthy: Cupping therapy is an ancient Chinese health therapy. Cups are placed against the skin, creating powerful suction to increase blood flow, reduce inflammation and promote lymphatic drainage. Massage cupping is better than deep tissue massage and is ideal for those suffering from back pain, arthritis, sore thighs, joint pain, muscle soreness and stiffness. Improve blood circulation and body immunity without any side effects! Come and experience Chinese cupping therapy now!4. Suitable for professionals and home self-care users: This cupping therapy set is not only suitable for Chinese medicine practitioners, occupational therapists, massage therapists, beauticians and other certified medical personnel, but also for ordinary users like you and me. Equipped with an extension tube, you can operate the cupping massage by yourself, turning your home into a spa with the COOBST Chinese Cupping Therapy Set. Become a massage expert and rejuvenate your body and mind!5. Note to all customers: Each cupping therapy kit contains (4 cups with an outer diameter of 1.4 inches, 1 electric smart cupping device, 1 extension tube, 1 x English instruction manual. Any problems with the product within 30 days from the date of purchase Free returns and exchanges, lifetime warranty on all accessories! We support every customer and provide the best customer support and service!Specification:Material: plastic, acrylonitrile butadiene styreneCup size: 1.4 inchesPackage includes:1 x Electric Smart Cupping Device1 x extension tube4 x glass cups