Very nice height, but dont expect your dildo to be able to be seated in the hole. It seems like it might work if it is a double ended dildo, but the hole is all the way through. Better for a vibrating wand, but not for bouncing on one of your favorite dongs. A bit of a lifehack I've been trying is getting an old dildo you dont use anymore, superguing a paper plate to the bottom, and inserting it into the opening. If you have a suction cup dildo, then you can stick it onto the opposite side of the plate, insert the side with the old dildo into the pillow's opening, then you can bounce on the still exposed dildo no problem!

Lovely toy, not only for grinding, but also for sleeping with it. Think about it sucking a sweet dildo while resting your head.