I emailed them with sizes I wear in common lasts, one of them being the AE 5 last. They responded to size one down from that. I am a 8.5 brannock, and 8.5 in 5 last (uncommon I know but I've been fitted by the pros). Meet in specifically said to order 7.5 so I did. I will report back when they arrive which they are saying will be in 2 weeks or less.