Herschel Supply Co. Nelson in Black. Herschel Supply Co. Nelson in Black. Canvas exterior with printed poly lining. Measures approx 14 W x 18 H x 5 D. Adjustable shoulder straps. Zip around closure with leather pull. Exterior pocket with interior slit pockets and zipper closure. Interior laptop slot. HERS-UY114. 10246 00155. 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.