Body Cupping is a great way to detoxify the skin and stimulate cell structure to create a smoother skin and reduce cellulite and pain. It is meant to increase blood circulation and stimulate the facial cells that are responsible for collagen production. It’s also been noted to help with bruxism, muscle tension and TMJ because cupping greatly relaxes the muscles. Cups are made of fine medicine glass and black rubber bulb and sent in a storage box. Size:#1 Body - chest, tummy, arms, legs. Outer glass bottom opening - 2.15"; inner diameter 1.50" Here’s how to do it.Dynamic or flash cupping only. Never leave your cup suctioned in 1 place - always keep it moving. You must apply oil first, and I recommend to pair cups with massage oil. Follow the massage lines - from the center of the face / décolleté to the sides or in upward motions any part of the body. Don't do it over varicose veins. Recommended use 10 minutes 1-2 times a week. Redness on the face or body during treatment is the healing response of your body - so don't be afraid of that! To clean your cups, I recommend taking an alcohol prep pad or damp paper towel. Made with medical grade glass and rubber.