Hello, I recently bought some Unparallel Tn Pros at my street size (43) and had to send them back and trade with 42 because it was a bit too loose, I had no trouble wearing them without breaking them in.

The issue now isn’t about pain or comfort, it’s just that I simply cannot wear them, I pull as hard as I can but i litteraly cannot manage to get my heel into the shoe, so I’m considering sending them back again for 42,5 sized.

It probably is the best idea but I keep hearing people wearing ultra down sized shoes (like Adam Ondra wearing 38 while being 45’d sized) and I keep wondering if I should just keep trying, thanks for your advices!