Filson Small Pack in Navy. Filson Small Pack in Navy. Water-resistant nylon twill fabric exterior with cotton fabric lining. Drawstring top closure. Adjustable shoulder straps. Interior pocket. Padded back panel. Measures approx 11 W x 20 H x 8 D. FILS-UY25. 11070413 NV. Built on the values of honesty, quality, and durability, Filson has been outfitting the rugged since the Gold Rush of 1897. Remaining dedicated to founder C.C. Filsons vision, each product is made from outstanding materials, capable of withstanding almost any condition.