12 out of 12 have popped up now
2 of them are still wearing hats though and they are on tight!
Should I try to remove them or will they come off naturally?
Give them a little spray if they're stubborn helmets
Yeah, thanks for the replies.
I did that yesterday but the little helmets are tight. I really can't see how they will shake them. I tried to get them off gently but decided it would do more harm than good so left them to their own devices.
Will check again when I get home from work in about 10 hours