Three to four years ago I bought my first pair and almost immediately fell in love with them. Neck back is flat without curvature. Still worth 5 stars for me. He wears a mens US 12 and got a 12-13. I had speakers on my handlebars that shorted out from the abuse. This shoe rack not only solves my problem but also allows me to neatly arrange sneakers, boots, and sandals in one rack with different rack settings. I can normally wear a size smaller in the sandals but for the closed toe shoe I ordered my normal size. Its usually hit or miss when you order anything that requires sizing through mail order. Find myself walking around and the bottom bends into itself and I have to pick my feet up to ensure the bottom flattens up so I dont feel like Im walking on a little ball. That sounds crazy, but its real.