Finding the right fit was challenging. I measured my fit about 8x, tried the wizard, the templates, and the chart and got three different answers. I ordered a pair of 43 after discussing with support. Too tight. I ordered the 44 and slipped in a pair of aetrex liners to replace the stock liners and they’re perfect. Cost me an extra $50 to ship back and order anew but return process was seamless. TL;DR for US fit just use the chart. Now to the shoes. I love the fit out of the box. Haven’t had to heat shape them yet. The single Boa works very well. More cranking required to tighten them but loosening is fast. Sometimes, after the first few miles I reach down and tighten up a notch—super easy while riding. Love the very stiff sole; heal fit is perfectly snug without any pain. Extra roomy toe box works well for me. I’ve only had them for a few hundred miles of riding but I think these will last years.