These are rings which are worn around the shaft of the penis for the purpose of restricting blood flow for longer lasting/harder erections and/or providing vibrations for stimulation of the penis and/or C-Spot during sex.
As well as being a great toy for enhancing your sex life, they’ re also a useful aid for men with erectile dysfunction, whether due to age, health or relationship reasons.

Wearing a cock ring will provide added sensations during sex but can be worn during any type of sexual play, whether that be oral sex or masturbation. The aspect of restricted blood flow is to prolong the sensations that lead to an overall more powerful orgasm.