Dr. Joel Kaplan Support Master Triple Smooth Rings increase stamina! Stretchy and comfortable erection enhancers provide testicular and penile support TPR. Made using phthalate free, non-toxic materials Thermoplastic Rubber TPR. Triple Smooth measures 2.5 inches long by 2.5 inches wide. Always clean before and after use. Dr. Joel Kaplan Support Master Triple Smooth is a registered trademark for California Exotic Novelties.