A lot of people don't know their real shoe size. There should be your TTS, and then here and there .5 up or down depending on if the shoe does run big or small, but majority of your shoes should be in your TTS. If you're going up or or down a whole 1-3 sizes you really dont know your shoe size, I dont care what you say even if your "socks are thicker" or whatever excuse it is. This is a pretty common problem I see amongst a lot of people but they tend to correct themselves later. This is why you see little kids rolling up into footlocker with their mom asking can I get a size 13 and they're like 4'11 in the 7th grade. As they get older they'll end up sizing down. It also reminds me of a friend of mine who wore a 10.5 or 11 for years, I constantly asked him if he's sure thats his size lol. Just recently he started Coppin a size 8.5 and says " they fit me better a fitted feel". I just wanted to do the palm face lol smh. I'm like brahhhhh I told you.....nevermind lol.