I've been wearing size 45 shoes for decades, no problem with different brands. There was noticeably more. To be honest I should have sent them back but didn't feel up for the hassle. For some reason when I ride them the soles of my feet feel pretty scratched - I put in insoles from old tennis shoes for cushioning and it helps, but does it really? And last but not least, these shoes are certainly not light, in fact I was quite surprised by their weight. Hope they wear out soon! I can honestly say I'm disappointed.