LS Enhancing Triple Band / Cock Restraint Rings

Triple Band, adjustable diameter cock restraint make this an a lot more flexible option than traditional cock rings. These simple little liquid silicone restraints will take you to a whole new level of sensations. 

How a cock ring can improve your sex quality? (healthline.com)

These sexual devices help trap blood in and around the penis to prevent it from flowing out during an erection.

This makes the penis tissue harder — and slightly bigger — for a longer period of time. It can also delay orgasm to result in a more intense climax.