My favorite feature of this gag toy is obviously going to be the O-ring. This always made my husband rock hard instantly when I would put it on for him. Before our recent divorce, we played role exchanges during our intimate affairs, and he was my "Daddy". He always had a fetish for gags, and I was always seeking new and exciting ways to please him as a submissive, so you can imagine his delight when I opened the new box of toys that I had ordered and pulled out this O-ring gag. Actually, it was one of the first things we tried out! The smooth silicone texture of the ring was super comfortable on my lips. It also had a silicone texture on the belt that clasped around my head, so it was smooth on my face, which was comfortable, and my hair didn't get stuck to it either, so I was altogether pleased and happy to use it! There are 10 belt loops, and the buckle itself is large for easy application and removal. The O-ring was a perfect size that allowed for oral penetration without extreme discomfort (sometimes gags make my jaw hurt, and I have to give up on them quickly), so it allowed for prolonged oral play with plenty of spit production to lube things up. I would recommend this product to anyone who enjoys oral play!