Material and Size: You can choose the right size according to different parts of your body. Different diameters of each glass massage cup are about 2.2/5.5cm, 1.4/3.5cm, 1/2.5cm, 0.4/1cm. The cupping set is made of high quality rubber. In order to ensure elasticity, it will be difficult to press at first. You can scald the rubber with warm water at 45C before use, so that the cup is easier to press.Wide range of uses: Silicone cupping sleeves are suitable for face, back, thighs, arms, legs, etc.; beauticians, masseuses, doctors, bodybuilders, athletes and even athletes rely on high-quality silicone and glass vacuum cupping therapy equipment.Function: Glass cupping massage increases blood flow during suction, allowing easier delivery of oxygen and nutrients to skin cells. Helps increase blood circulation, reduce fine lines, smooth skin, refine pores, improve and stimulate collagen, elastin, lymphatic drainage, fluid drainage and facial contours. Facial cupping stimulates collagen production, which will help redefine your facial contours and restore poor muscle tone.Best Facial Cupping Set: It includes four different sizes of cups, the smallest can be used on small areas like eyes, and the medium can be used on neck, cheeks, etc. Large ones can be used on body parts such as arms. To use, hold the silicone part to expel air, then suck on the skin. Use skincare products for 10-17 minutes a day. I believe you will see results in a month.