Hi! May I get some size advice please? 
I usually wear US 6.5/ Euro 37.
I tried the Hangisi is Euro 36.5 (which was labelled US 6.5 as well?) and it fits fine except the toe box is slightly snug. 37 was more comfortable in front but the back tended to slip out.
Does the toe box expand?

I usually wear US 6.5/ Euro 37.
I tried the Hangisi is Euro 36.5 (which was labelled US 6.5 as well?) and it fits fine except the toe box is slightly snug. 37 was more comfortable in front but the back tended to slip out.
Does the toe box expand?