I collect Dr. Martens shoes and with 192 pairs (and still adding) I needed a storage solution that was efficient and sturdy. I bought one of these racks and liked it so much I immediately ordered a second. I used some parts from the second order to build the initial rack higher and then used the rest to build a smaller unit to fit in another space. I secured mine to the wall since Docs are heavy and I didn't want any accidents, but that was an extra precaution. The unit is pretty stable on its own. As others have noted, it does take some time to put this together. The second unit went together much more quickly since I knew what I was doing. I'm very, happy with this product!