So, I purchased these shelves because I moved into a house with a small bathroom vanity. I needed a place to store towels, colognes, etc. First, I should say I purchased this "used" and opted for the three-tier. Despite some negative reviews I read on here, I found the shelves very simple to assemble. No tools are required as the screws require a specific allen wrench which is provided. The whole process took me about 30 min. I've also read some reviewers stating the shelves were not level, fortunately I did not have this issue either. But here are a few things you SHOULD know before buying these shelves that I wish I was aware of: 1) As I said before, the shelves were level in my case, but the mesh surfaces are not entirely flat. There are indentations on the surface that are obviously deliberate. So if you want to place small items such as colognes or cups on them by themselves, they will not be steady sitting on the shelves. I'm not sure why these indentations exist, but I found purchasing the recommended Whitmor storage baskets solved this problem - which I would have purchased anyhow as they look terrific and I highly recommend. 2) My bathroom - as do most bathrooms - has a floor moulding on every wall. Because this shelf does not account for this, they will not press flush against the back wall. As a result, we get two small issues: the shelf sits a bit forward than it should which means you are more likely to bump up against it when you sit on the toilet. And as I said before, the shelf indentations make small items placed on them unsteady and will typically knock over as was my experience. And two, since the shelf isn’t flush with the wall, the shelves themselves are unsteady. And as I said previously, this increases the stability of any items you place on the shelves. However…there are two special screws and corresponding holes on the shelves that allow for you to screw the shelves directly to the back wall. This fixes the stability issue, but since the floor moulding in most bathrooms will prevent this firm contact down to the base of the floor, the shelves will not be perfectly leveled. A couple of workarounds are to either cut through the moulding in your bathroom to allow flush contact of the shelf legs (which I doubt anyone wants to do) OR cut the legs of the shelf itself so they sit firmly on top of the moulding, and not in front. As for me, I left the shelves as they are and simply drilled the top portion to the wall. Adding the baskets takes care of the stability issue so I didn’t feel the need to do any cutting. Down the line, I may cut the legs to get better support but for the time being this setup is working just fine for me. I'll also quickly note I had previously bought the InterDesign magazine holder which hooks on the toilet tank itself. However, since these shelves enclose the toilet, I could no longer fit this holder on the tank. Fortunately, since the shelves have bars I was able to simply hook the holder to one of the side bars. They sit low where I need them to be and they match the color of the shelves exactly! So I highly recommend getting this yourself. I will try and get some pics uploaded so you can see what they look like with the baskets and holder together. Aside from these minor issues, the shelves look fantastic and provide the extra space I need.I would have given the shelves 5 stars had it not been for these minor issues, but overall I am very pleased with their look and function and would recommend buying them having been made aware of the above :-)