Professional quality cupping therapy set. The-go-to choice of Chiropractors, physio and licensed massage therapists, acupuncture practitioners, sports coaches, wellness centers and athletes worldwide. What You Get: 8 stackable cups. Sizes: 2 Large (2"), 2 Medium (1.5"), 4 Small (1.25") Pain Management & Wellness: Supports immune and respiratory function, alleviates common muscle, joint and nerve pain, swelling, arthritis, knee pain. Athletic Performance: Cupping therapy is commonly used in sports to help improve mobility, flexibility, performance, speed up recovery and to alleviate common muscle soreness. Vacuum suction helps break up fascial adhesions and release lactic acid build-up. Material: Free from BPA, phthalates, PVC, plastics. Made with premium platinum cured silicone for superior suction, flexibility & control. Easy to squeeze and easy on your hands.