I wish this product was better crafted for safely issues as I felt it wasn’t as secure that I would like for my senior dog as I felt it could collapse if tons of pressure was on the ramp itself at any point in time as there is no locking system and just grooves to put a piece on both sides inside to hold it at one of the 3 levels. This is just my opinion as everyone has the right to theirs and it may work out for some and not others.