Most customers find this series runs small.
If you wear a half size, order at least the next whole size. If you wear a whole size, order the next size up.
For example, a size 8.5 should typically order size 9, or even 10. Size 9 should typically order size 10. Boots that are too tight lead to cold feet. Be sure to leave room for optimal air flow!
Special note for half sizes! If you size up to the next whole size, the Baffin may feel tight at first, but it will open up and conform to your foot. Wear the boots around your house for an hour or so, more than once even. Be sure to keep them in brand new condition in case you want to return them, but most likely you will find a little wear creates a perfect fit!