I bought it when it was first being promoted about two or three years ago.
I really disliked it, because you're essentially squashing your leg(s) with the big plastic "ab machine". I wish I would've saved myself the $80. It was very awkward to work with, I was really disappointed.
Maybe I wasn't "tall" or "long" enough? But I'm 5' 5" so I think that's pretty average. I tried so many times to make it work for me, but it was just getting to the point where my lap was getting bruised & my abs weren't feeling the burn.