When I left home to go to College at WSU in 1975 I didn't know much but I new it would be cold and there would be ample oppurtunities to bird hunt. So I bought two new items to take with me.....a shotgun and a Filson Mackinaw. I've worn out the shotgun over the years but the coat still looks like the day I got it after years of wear. It's a little tighter now, I can't layer under it anymore but I still pull the coat out every winter. I fully expect it to last my lifetime. Best article of clothing I ever bought.