Cockrings are great toys for boys and men! They work mechanically to help to hold blood in the penis, giving stronger erections, increased sensations & sometimes ejaculation control, if they are designed well and a snug fit.
There is a broad range of styles and materials including stretchy gel, silicone, vibrating, metal & leather. The quality varies extensively. This red ring is guaranteed as mid-range quality starting point.
Cockrings can be worn around the balls or the base of the penis, or around the base of the whole lot.