Cockrings are a popular and simple way to, achieve a harder erection (harder = bigger) and perform longer before a more intense orgasm

this is because the cockring restricts the blood flow back into the body creating a higher fluid pressure within the penis, which normally only happens just before orgasm. Because this momentary pressure surge is usually what can trigger an orgasm, it means without it, the orgasm can be controlled because the pressure is sustained. With training men can stay hard and not orgasm for extended periods of time, which translates to a more intense orgasm and can also enhance the effects of jelking.