Cupping Warehouse TM has been supplying healthcare providers for years for clinic/spa use and Patient's Home Use. Our Vacuum Cups are engineered with a PRO 60-65 Durometer (measure of softness/harness) for one of the strongest suctions of silicone cupping therapy sets on the market. Our vacuum cups PRO 65 prevents collapsing of the cup during static cupping and dynamic massage cupping. KNOW YOUR CUPS!