Takes some getting use to putting it on over your balls. But once you do it a few times, you get the hang of it. I stuffed a few cotton balls in the end to expand just the head of it and also provide something solid to thrust against. The look on the wife’s face when it went in was priceless because of the head size. Allows you to last a long time and she certainly remembered it the next morning walking. You can flat do some damage with this thing!