I hadn't worn my C-IN2 Y Back thong in a while and thought I would write a quick review. This was one of the first thongs that I got and I was intrigued by the Y Back and people seemed to rave on about the comfort. I actually own the C-IN2 Basic Jockstrap which shares very similar styling to this, but a jockstrap of course. The waistband on the jockstrap is actually quite a bit wider too.
The actual Y Back feels good, but I would say that it is closer to a g-string rather than a thong because of the size of the material and goes in the butt. Because of this I find that it isn't as comfortable as my other thongs that have more material there. The pouch is also all cotton so doesn't have a lot of stretch, but is comfortable enough.
Overall I think if you like Y Backs, and you're fine with other g-strings then you'll love this.
https://www.c-in2.com/products/4002