I purchased 2 of these to store shoes in but needed to lay them horizontally in my closet. It worked out perfectly! My closet is a bit small so I layed them side by side which allows for 20 pairs of shoes to be stored and room on top to put boots (see pics) I wear a ladies size 8 and I can fit one whole pair in each slot. Also deep enough so they don't stick out, it looks nice and tidy! A whole pair of mans shoes probably wouldn't fit and would need one slot for each shoe.