Set of 2 Large (16.1 x 10.2 Inch) Cabinet Storage Shelf Rack, Shelves，Kitchen Counter and Cabinet Shelf, Storage Rack Organizer for Bathroom Cupboard (White)

I use this exact unit for my shoe storage. I bought some wire shelves at the dollar store, and they divide each shelf into 2. This is a link to wire shelves on Amazon, cuz I couldn't find them on the dollar tree website, but they look exactly like this at Dollar Tree, and cost just $1.25, so don't buy the Amazon ones I'm linking.