I am looking for advise on boot sizing for my son. I really don’t know much about ski boot sizing and we’ve been going along trial and error thus far. We don’t have much in our area for equipment dealers, just a sports check an hour away and the young rep wasn’t overly helpful. We have finally found a pair of second hand boots that fit his foot(23.5) but we can’t get the top buckle even close to done up. I’ve looked at the boots and they don’t appear to be adjustable. Do we just keep sizing up until we can get that top buckle done up? Is there some sort of accessory we can try to extend the buckle? Thank I’m advance for any advice.