In reply to MtnGeekUK:
I have the white one, love it. Where you based? I'm quite near a couple of decathlon shops, so I don't imagine trying mine will be any easier for you!
I have an awkward head for helmet fit, and this one fits me well in the small size. I also got on well with the BD half dome and the camp armour helmets, if that helps at all? Personally I never buy a helmet without trying as slfew of the work for me, but if your head is more regular than mine then maybe it would be fine!