Love them! They're perfect for adult shoes. They fit a women's US 8 well with plenty of extra room.
I love that they're such a simple design and easy to assemble in under a minute each (and they provided a setup video - it only played on my computer, the video didn't play on my phone though).
I used the extras for my towels and to organize some tools. They're even sturdy enough for me to rest my laptop on top of it.