My elderly dog is around 50, and this item is sturdy  strong enough for him.  When the leg is down  its braced against my rear bumper, between me and the open door, it works great!  The steps are small, but hes getting used to it.  The only reason I didnt give it 5 stars was that I had to put on the carpetnon-slip treads.  It wasnt hard I just hoard every minute of my time.