Well, to me mine is to short. But its does work . But i would say from 61/2 to 63/4 give or take. To add to this it has never let me down,lol
Seven in length and girth about five and a half inches , wife loves it that all that counts and to old to worry about how big it is , lol To add things i am very active with the wife , and she is younger by ten years
If she is having trouble standing and speaking, that question is rather moot I'd say. With that in mind, you know how much she enjoyed out by how she is involved with it. Just laying there, probably not enjoying at all.
I will answer this one for my hubby. He is 1" soft and 3" hard and pretty skinny around, like a roll of quarters.