Filson Ranger Backpack in Otter Green. Filson have crafted, in the USA, the perfect backpack for your inner explorer. The key elements to this 27L capacity backpack are, its hardworking rugged twill construction, 10-oz. antique tin cloth flap secured with branded buckles and padded shoulder straps for added comfort. A bonus feature to this backpack is the interior snap-removable wool zipper pouch, in a tonal green hue.