I am extremely disappointed with this product. First, I have no idea how the two rings are supposed to work and keep the dildo in place. There were no instructions, and it just did not make sense. Second, and the killer, was that the rings are so wide! Check the measurement of your dildo before you actually buy this. I have never seen a dildos base that was wider than the rings on this one. All our dildos fall out. Has anyone used this successfully? Unfortunately, I could not return it because yes, the item description said the actual diameter of the rings. I just never thought itd be so discrepant. Since I was not able to use it nor return it, Im very unhappy with the $30 I lost on this item.