These shoes are HUGE. I wear a women’s 12 (a men’s 10/10.5) and ordered both the 10 and 10.5 (for my kids thinking they ran true to size). However, the 10 is easily a thumb’s width too big for me. The 10.5 is nearly as large as a men’s size 12 running shoe. So, I’d say these run at least one (or maybe 1.5 sizes) size large. Order a size smaller.