It's always been said that Adidas and Vans are true to size and the numbers pretty much match, but 10 in this one is closer to 10 1/2 or 10 1/ 2 or 11 in vans. From bottom to bottom where your foot is furthest back in each shoe and an extra sole sticking out at the back not used for measuring, the shoe is definitely still at least half an inch longer than the same size at Vans. A whole inch more if you use the extra sole that sticks out at the back on this particular pair of shoes. Definitely like every pair of shoes I wear I will add an insole which makes them perfect but they are a bit big. My newest pair of Vans Berle Pro size 10 with the insole feels a bit tight at times so it was probably luck as they got bigger. I'm sure I could easily go down a half size or maybe even a full size, but in the past I've always regretted it later when I did that as the shoe ended up being too tight on my foot or mine small was one. toes or something. So now I always wear half a size bigger and add an insole. But keep in mind that they run large compared to almost every other shoe. The shoes are original, not fake, in perfect condition, not worn or scratched. Very comfortable and very light considering they only feel heavier.