I own and wear one of these gags and I can tell you it is AMAZING! For your top it is like a pussy with a tongue at the bottom that can swirl around the head of your cock. For me it's a way to give an extra inch or two to where I can have a nice cock that fits almost perfect in my mouth. The best part is the open ring that locks your mouth open because you can get your mouth completely filled with cum, all over your tongue as you swirl around a throbbing and pulsing mushroom head, and then your top can leave you locked up with a mouthful of cum that you can't easily swallow.
We have our MOUTHS STUFFED
And WE CLOSE OUR MOUTHS !!