They are giving away free cans of their limited edition wax, which has a nice Christmas theme featuring a cartoon of Santa. It's inspired by their #BarbourChristmas film with Raymond Briggs.
For your chance to get one, all you have to do is comment on their facebook page saying how often you think Barbour Waxed jackets need to be re-waxed.
Head over to their facebook page and follow the onscreen instructions for your chance to get this free stuff.
A tin of this stuff will keep your waxed winter coat repelling the rain effectively all the way through the winter months.