They run small. My wife and I can both place the back of our foot against the wall, standing over a ruler and my foot measure right at 11" yet I take a size 12. My wife's is also 1" off (can't recall her foot size at the moment). One thing we liked about the Crispi's were zero break in. Her first hike was a 9 mile round trip up a very rocky, wet canyon bottom, literally walking in a creek for hundreds of yards and neither of our feet got wet. Two weeks later we hiked Mt Timpanogos in Utah, 5000" elev change and 15 some odd mile round trip and our feet did great.
Alan
Well that's not how shoe sizing works. A standard US size 12 is for a 11 1/4" long foot.
https://www.healthyfeetstore.com/shoe-length-sizing-charts.html
