A ring placed around the base of the penis for sexual enhancement (also known as a “couples’ ring”). By limiting the flow of blood, the ring helps men maintain their erections. It can also slightly engorge the penis past its normal size. Some cock rings provide stimulation for the receiving partner with additional features like vibrating motors.

Most users put cock rings on before the penis becomes erect. To stay safe, the wearer should remove the ring immediately after sex or if the ring feels too tight.

Lubricant can help when putting a ring on or taking it off; many rings also have safety releases that prevent the penis from getting stuck. Cock rings are available in a variety of materials including leather, glass, silicone, and plastic.