Just saw these caps in Asda and for a fiver I thought why not and bought one , due to being made of fleece it's a nice warm cap and inside the cap are drop down ear warmers (not shown in the pic) which do not flap about due to an elastic strap at the back of the cap.
For that price it's just handy as a spare to keep in your rucksack.
http://direct.asda.com/george/mens/accessories/trapper-cap/GEM315367,defaul...