Birks are great. I ordered my usual size 10/41 in a Narrow (something I usually only need for sandals) and found that they were a bit too long for me. My feet are exactly 10 1/4" so a 10 really should fit perfectly but I find pretty often that I need a slightly smaller size in many brands of sandals. I was surprised that even with these being sized Narrow, I had to put the toe strap buckle on the tightest setting. Shoe makers really resist making shoes for small-boned feet, it seems. If you are considering these for carry-on-only travel you may want to also look at something a little more light weight and versatile (something that can get wet).