There is no such thing as a universal size guide. There is no such thing as always being a UK10 (unless you don't care how your shoes fit and you only care
The Shoe Snob Blog
The World's Foremost Authority on Fine Footwear
The Shoe Snob Blog is the world’s foremost authority on fine footwear. Founded by Justin FitzPatrick. Want to learn about good shoes? You came to the right place.