Cloud 9 Pro Sensual Pro Rings Donuts 2 Pack. This innovative Performance Donut ring is designed to help enhance erection and optimize staying power. This unique Donut shaped cock ring features two sizes for training. Wear one (or two) based on your own preference. Performance Cock Rings are soft and stretchy to fit any man and stimulate your partner. Designed to fit for a tailored, snug fit without pinching during use. Increase your erection size and heighten sensitivity during sex and solo play with this stretchy cock ring set. Do not use silicone-based lubes. Made from latex and phthalate free premium silicone. Extra thick seamless design for comfort. Comfortable Soft Liquid Silicone Performance Tire Rings are Soft and Stretchy Designed to Fit for a Tailored, Snug Fit Body Safe, Phthalate-Free Silicone Measurements: Large - Height: 14MM Width: 51MM Depth: 14MM Height: 12MM Width: 42MM Depth: 12MM