Cotton fabric exterior with printed poly lining. Zip around closure. Adjustable shoulder straps. Exterior zip pocket. Interior slot. Measures approx 12"" W x 17.5"" H x 5.5"" D. HERS-UY397. 10179 1455. Herschel supplies backpacks and bags that are modern in shape with loads of crafted detail. Inspired by the old-school American mountaineering heritage and world travel, their collection is a new twist on all your vintage favorites.