I've been wearing size 13 shoes of all brands for 25 years, size 47 cycling shoes when cycling with cleated shoes. I couldn't wear them and had to send them back. I would take half to full size, but of course everyone has their own experiences. To be fair I reordered EXACTLY the same shoes one size up, love them, the price is right, the style and quality match the price. Insoles are very cheap and thin foam, I will replace them with runner's insoles (I had a new pair and they didn't fit my shoes, I use the same insoles in all my running shoes with no problem, so they run small).)