Ok, even though I'll never buy CONS and I'm not into them, I looked this up for you.
Any shoe that has a chuck-type vulc sole (chucks, star player, sumner, one star) you buy a half size down, not full size. Half.
The rest (KA3, metric, zakim, breakpoint) you buy your normal size. If you don't know what your shoe size is, go to a shoe store and have your foot measured.
If you buy the proper size and they hurt your feet, find different shoes to skate in.
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