I bought a pair of size 42, 8 1/2 US, and they are snug. I can really feel it on my toe joints. The left foot more so than the right. I tried on the size up from it, 43, 9 1/2 US and they fit but didn't quite feel snug enough.
This is my first pair of riding boots so I really don't know how much they will open up.The heal area is perfect it's really just the tops of my toe joints. Should I trade for a larger size and chance it stretching in the future or keep these and hope the toes will open up a bit?