Four sizes: 4 cupping devices with different diameters. The diameter is 14/25/36/53 mm, which means that the needs of different body parts can be met. With this cupping glass, you can massage face, back, hands or legs. High-quality materials: the cupping set is made of rubber, PVC and glass. Different parts are made of different materials. The soft and thick PVC cup can be easily squeezed to achieve a better vacuum effect in no time at all, and is durable. Easy to use: before using the cupping set, first apply the massage oil to the skin, then press the silicone ball, gently stick the glass to the skin, and then slowly release the silicone ball. If you want to remove the cupping glass, you can also simply remove it by squeezing the silicone ball. Multifunctional: increases blood circulation, reduces fine lines, smooth skin, refines pores, stimulates collagen and elastin, lymphatic drainage, sinus drainage, scar therapy, facet joint therapy, lip enlargement, eyebrow improvement, headaches and face shaping. Suitable for: the cupping ball suit is suitable for back, thighs, arms and legs; it is suitable for most skin types, offers you good skin care, reduces swelling, relieves stress and improves by a relaxed sleeping experience.