I'm guessing its the winter coat. Heres a link to a video of Jethro Tull wearing what im talking about http://www.youtube.com/watch?v=toHlMD50eYY
I have been trying to find out what its called for a long time. The search inevidably lead me here, i had no idea such a place existed. seems like it may be fun and posibley a place where i can get leads on learning more of my scottish herritage.