Filson Large Rugged Twill BackpackThe Rugged Twill Large Backpack embodies the philosophy that has guided Filson for 125 years: making uncompromising products using the best available materials and constructionproducts that withstand daily use for years, to be passed on, not thrown away. One of the first bags Filson introduced over 30 years ago, this traditional backpack remains proof that when something is worth doing, it's worth doing right. Instead of waxed canvas, Rugged Twill was