With the number of outerwear trends circulating at the moment, it can be hard to decide which type is worthy of investment. We love trendy, fun and printed options but when it comes to getting through the harshest parts of the winter, the more classic, the better. Spotted during Paris Fashion Week were a plethora of classic double-breasted wool coats that'll keep you warm all season long, and won't go out of style. Shop the best 25 below.