Good day to all IIS readers...
The official report is, this wonderfully made, warm and toasty IIS beanie DOES INDEED fit 'most' size heads including the extra large and bald 'bouf head' size!
Thanks for the prompt shipping Mike...they arrived today and I'm wearing one now.
Oh, and sorry to disappoint you Eric but I got some stickers too. (I'd say nah nannie nah nah but that is rather childish isn't it?)

Now I just gotta get a proper 'scope to put them on.
Cheers to all.