Definitely needs weights, which are NOT included. And when I contacted the company that makes the stairs, they told me they don’t make any weights for them! What! There is even a description and image of the weights you need in the manual. I can’t find any weights that fit or look like the picture. We’re just using water jugs of gravel on the steps right now because you can’t sit jugs underneath. Wish I had gotten stairs that I knew for sure had matching weights.