In reply to Archangel:
I have a massive bonce - the joke in our family is I didn't walk until I was 3 because my head kept wobbling over every time I stood up. When I had a JB fibreglass lid I looked like a cross between the Mekon from Dan Dare and an Italian fireman, and once got it so stuck in a chimney I had to undo the buckle and take my head out... I had visions of it being there 10 years later draped in slings ("Pitch 2: climb the chimney to the in-situ helmet, which can be passed with a tricky mantel shelf").
I do however just fit into a fully let out Petzl Ecrin, as long as I don't wear anything more than a polypro balaclava in winter.
I feel your pain. Still, as long as you don't take up caving all will be well.
cheers
b
Post edited at 23:02