Cap by Herschel Supply Co, Hemp-mix fabric, Paneled crown, Eyelet vents, Flat peak, Adjustable strap, Wipe clean, 50% Cotton, 30% Hemp, 20% Polyester. 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.