You can do all of the lunges, stretches and deep breathing exercises you want, but nothing is going to keep you harder longer than a cock ring. This cock ring set has everything you need to get started on having stiffer, firmer and longer-lasting erections. You can use the ring simply for your penis, for your testicles, or for both. Try it for yourself, and feel the difference. Not only do these nickel-plated rings make for a striking visual statement, but they're going to help increase your sexual pleasure - better, and longer, sex is here to stay!