Sizing is the same, all the boots are measured in MENS sizes. They may possible have a womens boot coming out in the future But for now, you just have to do the math to translate mens size into womens. Out of the several hundred pairs we have sold this year, most women actually prefer the Klim Adrenaline Boot in our shop and online. It seems to be the warmest to them, and if they are super cold they step up to the KLIM Arctic GTX boot. It is double the insulation. Although, sizing seems to be pretty dead on with the Adrenalines, if she was gonna wear say a size 6 in the adrenaline, I would order her a size 7 in the arctic. For some reason that warmer bulkier boot seems to fit a bit tighter. Hope this helps!
If you want to explore some more options that are available or read up more on KLIM, check them out here.... BOOTS BLOWN MOTOR OFFERS