Keywords: Vacuum Suction Cups, Chinese Cupping, Cupping Kit, Cupping Therapy Set, Massage Cupping Set : This cupping set is used to relieve back, neck, and leg pains, loosen muscles, sedate the nervous system, improve muscle immunity and more. Features: Cupping is an effective treatment for insomnia, shoulder pain, low back pain, and helps to relax muscle, relax the body and more. Easily attach the pump to the cup and then draw air out of the cup to create a vacuum effect that causes the skin to rise and blood vessels to dilate. Various cups sizes, suitable for most parts of the body. Transparent design, easy to adjust the suction. Smooth edges, comfortable to use. Easy to use at home. Specifications: Material: Plastic Color: Transparent Cupping Cup Size: S: Inner Diameter: 2.1cm, Outer Diameter: 3.0cm M: Inner Diameter: 2.5cm, Outer Diameter: 3.4cm L: Inner Diameter: 3.4cm, Outer Diameter: 4.4cm XL: Inner Diameter: 3.8cm, Outer Diameter: 5.1cm 2XL: Inner Diameter: 4.7cm, Outer Diameter: 5.8cm 3XL: Inner Diameter: 5.5cm, Outer Diameter: 6.6cm Package Contents: 12 x Cupping Cups (2 of each size) 1 x Extension Tube 1 x Hand Pump 2 x Magnetic Massage Points 1 x Manual Please Note: Please allow slight errors due to manual measurement and different monitors.