Cap by Herschel Supply Co, So good, you won't want to take if off, Panelled crown, Sheer mesh inserts, Flat peak, Herschel Supply Co print, Snapback strap. Herschel Supply Co produces quality built backpacks inspired by vintage mountaineering equipment, American heritage and world travel. With a passion for individuality and personal style, Herschel Supply Co adapts to a new generation updating their bags with a modern fit, shape and feel.