Material | Composed of premium removable silicone blue bulbs and hand blown thickened glass cups, the vacuum suction cups for facial cupping treatments are durable and skin - friendly, fit nicely in the hand, will stand up to multiple use without cracking or splitting. Size | The kit includes 4 pcs cups have the same height of 4 inch/10 cm yet different diameters measured 2.2 inch / 5.5 cm, 1.4 inch / 3.5 cm, 1 inch / 2.5 cm and 0.65 inch / 1.6 cm. Different size for different body parts. Pick and choose one that fits wherever you want to massage. Get Your Glow On | Who doesnt like spotless and clear skin? I know you do. The cupping set helps promote blood circulation, rejuvenate skin and make your skin look even more toned plus healthy. Just invest 5 minutes every time and you will see the result. Easy&Safe | The cups have the right amount of suction for use on sensitive areas such as around the eyes. Enjoy self-massages at home or physical therapy for your patients. No skills required, no fire needed, designed to leave less cupping bruises than conventional cups to the skin tissue. Wherever You Go | Bring the kit anywhere anytime with you. No extra massage tools to take along, these 4 cups can be widely used on whole body. Try having a massage by placing the cups on your neck, shoulders, arms, back, waist and legs to help relieve muscle pain and stress.