I wrote an earlier review that I can't find to update so I'm writing a new one. This rack arrived in a badly damaged box and half of the bars were missing. I contacted the manufacturer (there was a card inside asking you to contact them before returning) but they could only help if I had the item number which was listed on the instruction/assembly leaflet. There was no leaflet so this didn't help. I then contacted AllModern and after some investigations the rep worked out what the part numbers were and ordered 8 replacement bars. These arrived much faster than anticipated (4 days) and all worked out in the end. 
This is sturdy rack. I disagree with other reviews as I am only storing high (+4inches) heels. The space between the bars is such that the heel from the level above needs to sit inside the shoe below, but this also means that they aren't falling off. This works for me and I'm really pleased with it.