Cloud 9 Pro Rings Liquid Silicone Tires 2 Pack Cock Rings Black. Super soft Liquid Silicone for intense pleasure. 30 days warranty. This innovative performance tire cock ring is designed to help enhance erections and optimize staying power. This unique Tire shaped cock ring features 2 sizes for training. Wear one or two based on your preference. Performance Tire Rings are soft and stretchy to fit any man and to stimulate your partner. Designed to fit for a tailored snug fit. Increase your erection size and heighten sensitively during sex and solo play with stretchy cock ring set. Do not use silicone based lubricants. Made from latex free and phthalate free premium silicone. Extra thick seamless design.Care and cleaning thoroughly after each use with a toy cleaner. Video.