The silicone cock sling by Tantus is designed to be worn by men during sex or masturbation. The sling is to be worn over the penis as well as the testicles with the "tongue" pointed toward his bum. It is designed to stimulate his perineum while thrusting during sexual intercourse. The product page says you can turn it around to cup the testicles to enhance masturbation but my fiance didn't use it for that purpose. It isn't exactly the easiest ring to get on but once you get the hang of it it should be fine for most men.

The Silicone cock ring is made of, you guessed it, silicone! It is hypoallergenic, non porous, latex and pthalates free. This silicone has a matte, velvety texture with some drag to it. It is a bit firm but has some give and flexibility to it that you can see in the photos on the product page.
There is no added textures to this sling, just smooth silicone all around making it great for any user.
The product page says it is seamless but ours has a ring of what looks like glue (it isn't), but is flawed silicone around the actual ring part on the top but this didn't cause any discomfort and wasn't noticed when used; it just looks bad.
There is absolutely no odor to this sling.

The sling comes down to a rounded pointed tip which is designed with male pleasure in mind. When placed over the penis and testicles with the tip pointed toward his butt it will add light pressure to his perineum during intercourse as he thrusts. You can also turn the tip around to cup the testicles.

The measurements are:
Max stretched diameter: 5 1/2"
Unstretched diameter: 2"
Length: 4"

This should be a good fit for most men. Getting it on can be a hassle and the first time around he had a hard time getting it on. It is best to put it on before you get an erection. First slip the penis through followed by one testicle at a time. Lubricant is your friend here but only if it's water based. My guy said it was a snug fit but wasn't painful or cutting off his circulation.

How it performs would vary by person and anatomy. My guy said he indeed did feel it stimulating his perineum and it was very pleasurable and a different experience. When I first ordered this, I was worried he wouldn't be into it but he has been saying he wants to try different things. He ended up liking it and said it felt good.
This ring does nothing for the female during sex but hey, it isn't always all about us!

The Silicone cock sling love to pick up hair and other particles so you will want to store it in a place where it will be protected.

You should only use water based lubricant with this cock sling.

Cleaning is easy, simply was it with mild soap and warm water, toy cleaner, wipes, 10% bleach solution or boil it if you want.