Linx Dual Rings
One piece shaft and balls design. Made of durable silicone.
Do not use with silicone lubricant.
The guy who served me in Scandals was really helpful. The item I chose though, although good to look at, is difficult to get on and I pinch my balls with the ring designed to go around them. The cock ring itself is ok, but really overpriced. I have a set of 3 rubber rings I bought not long ago for a third of the price that are much better.