Cock rings are usually worn at the base of the penis, behind the scrotum, although some individuals wear them around the shaft of the penis only. In contrast, ball stretchers are worn around the base of the scrotum only.
It is recommended that cock rings be worn for no longer than they are comfortable, or 45 minutes, whichever is shorter. If you’re using a ring for the first time, you may want to remove it after five or ten minutes so you can become familiar with the various sensations cock rings provide.
Hummdinger
Tantus Super Soft Silicone C Ring