3 Choices for an Enhanced Erection! A cock ring is designed to prolong erections for increased pleasure. Elevate your performance with an easy and affordable method to achieve a firm erection while delaying ejaculation. Three sizes are provided to help you find the ideal fit or to use them together. The material is stretchy yet firm, effectively reducing circulation and trapping blood flow in your penis. You can wrap a ring around just your penis or include each testicle and then your shaft for added effect. Not only will you enjoy a longer-lasting, bulging erection, but it will also be hypersensitive. Sex has never felt so good! The Proper Way To Put On A Cock Ring. Many believe a cock ring goes on like a diamond ring; it doesn't. With a flaccid penis, first slip one testicle through the ring, then the other. Once the entire scrotum is in, bend and slide the soft penis through. This secures the cock ring at the base of the genitals. Remember: testicle, testicle, shaft. Product Specifications: - Material: Nitrile (NBR) rubber (latex free) - Measurements: 3 rings, 1.5 (4 cm), 1.75 (4.5 cm), and 2 (5 cm) in diameter - Can also be used to mount a dildo in a strap-on harness.