We must have looked at a thousand shoe racks over the last month or so for our new closet design.  Most were the two rows of plastic, which the shoes can fall through very easily.  When we saw this configuration, we immediately bought two of them, one for each of our closets.  They will even hold my husband's size 14's without hanging over.  They go together very easily and are very solid and fit in a very small space.  Great job, Wayfair.    

Pros: full shelf to hold the shoes in place
Cons: They could be taller, but they have the perfect amount of space for most pairs of shoes.   I may end up adding a 3rd unit to make room for more of my shoes.