Experience the ancient art of healing with this premium Glass Cupping Jar Set. Designed for traditional fire or vacuum cupping, each set includes four reusable jars in graduated sizes to target different parts of the body. Whether you're a professional massage therapist or exploring holistic wellness at home, these thick-walled glass cups are perfect for stimulating blood flow, relieving tension, aiding detoxification, and supporting natural healing. Durable, easy to clean, and beautifully made for reliable use. Our exclusive Royal Massage Fire Cupping jars are made of medical-grade molded glass with smooth, soft edges for the ultimate in client comfort. Each cup has a flat top for safely resting cups after cleaning. Each cup is made of thick, heavy-walled glass and is designed for use by traditional Chinese fire cupping techniques. Heat or fire from a candle, disposable lighter, or burning cotton/alcohol ball held inside the cup and then removed is customarily used to create the vacuum. Available sizes: X-Small #1 (Outer Diameter: 2.25 in) Small #2 (Outer Diameter: 2.5 in) Medium #3 (Outer Diameter: 3 in) Large #4 (Outer Diameter: 3.4 in) X-Large #5 (Outer Diameter: 3.75 in)