A cock ring is primarily used to enhance sexual pleasure by restricting blood flow out of the erect penis, which can lead to harder and longer-lasting erections. Some users also report increased sensitivity and more intense orgasms.

To use a cock ring, follow these steps:
Choose the right size: Ensure the cock ring is the correct size for your penis to avoid discomfort or injury.
Apply lubricant: Use water-based lubricant for easier application, especially if the ring is made of a non-stretchable material.
Put it on when semi-erect: It's easier and safer to put on a cock ring when the penis is semi-erect rather than fully erect.
Position the ring: Slide the ring to the base of the penis, and if designed, position it around the testicles as well.
Use for limited time: Limit use to about 20-30 minutes to avoid potential complications from prolonged restricted blood flow.

Cock rings are generally safe when used correctly. Important safety tips include:Not too tight: Ensure the ring is not too tight to avoid cutting off circulation.Time limit: Do not wear for longer than 20-30 minutes.Remove immediately if there's pain or numbness: Discomfort can indicate a problem.Consult with a doctor: If you have any medical conditions, such as cardiovascular issues, consult a healthcare provider before use.

Potential side effects include:Bruising or irritation: If the ring is too tight or worn for too long.Numbness or coldness: Indicative of restricted blood flow and the need to remove the ring immediately.Allergic reactions: To the material, especially if made from latex or certain metals.

Most people can use a cock ring, but those with certain health conditions, such as blood clotting disorders, diabetes, or heart problems, should consult a doctor beforehand.