My partner is very thick, so it took longer to get on him. I used lube to get the rings on, but once it was on, it was so good. I felt double penetration in such a new way. It is a little hard to position to make sure you get getting it in both holes, so I would guide it in my asshole between thrusts, which worked perfectly. It is the perfect size so you can feel it, but it is not too big. It is hard for me to take double penetration, especially if a toy is too big, but this is the perfect amount of double penetration. I especially loved it when he went slow and rough towards the end of his thrusts.