> I will also assume that you either know what this size is – or can find it out by using a Brannock foot measuring device.
About that. I did multiple measurements using a Brannock device, and L foot measures 9.5, R foot measures more like 9.25. That's a "no-hike" measurement, pre-swelling. According to the shoe salesperson, those numbers "translate" (why is translation necessary?) into a 10D.
I've happily worn a variety of Nikes sized from 9.5 to 10.5.
I've happily worn New Balance sized from 9.5 to 10.5.
My Merrill hiking shoes are 10, also comfortable.
I've also tried the same listed sizes in the same listed brands, and some just did not fit.
So, is Ivo's rec to buy the sock based on the Brannock measurement of 9.5/9.25?