Filson Mackinaw Wool Blanket is made to last a lifetime, and more. There is nothing like a warm wool blanket to wrap up in when the weather turns colder than cold. The heavy Wool Mackinaw blanket from Filson, with more than two pounds of wool per yard, will keep you warm no matter where you roam: at the stadium, in the woods, by the lake, or safe at home. Made of the highest quality virgin wool, this classic style blanket is so sturdy, it may well become a family heirloom!