I've got one I wear most of the year ..
http://www.getgeared.co.uk/HELD_9053...ategory=403570
..... keeps the drafts (sp?) out !!!
I've also got a windstopper balaclava for when it gets really cold ......... lovely ........... but its a bit narrow to give full sideways vision .....
I used to use a scarf ......... but you'd always find gaps ........ and it got really wet !!!