SIZING- THIS MODEL RUNS SMALL, WE SUGGEST SIZING UP. (example: if you are normally a size 9 or 9.5 we suggest ordering a 10.) To be 100% certain of your correct size in these runners, I recommend going with your EUR size for an exact fit. Please take note of size chart before ordering as all sales are FINAL. We cannot perform size swaps or exchanges. Thank you for your understanding.