A 32.5 is a HUUUUUGE boot. On top of that, the Aero series is a wide boot. I would do a shell fit by pulling the liners out and seeing how many fingers you can fit behind your heel and the shell of the boots when your toes touch the front of the boot. If there is more than 2 fingers, you are in too big of a boot, unless you want some grow room, in which case, three fingers is ok.
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