Having had two completely different sizings on the same day from Clarks shops practically next door to each other last time I bought some, I opted for the larger measurement. I wasn't sure about the fit to be honest, felt they weren't wide enough, but was told by the '12 year old' shop assistant that they were a good fit, and so reluctantly coughed up the £40. Within a few weeks they were leaving red marks across the top of his feet and so I ended up buying him a £3 pair of trainers from Matalan that he has lived in ever since, or his slippers or wellies. (Bought a second pair of trainers a couple of weeks ago! ) Part of me feels quite deliciously rebellious, and the rest of me feels the full load of typical 'terrible mother' guilt. What d'ya reckon?