Hat by Herschel Supply Co, Cotton twill, Domed crown with eyelets, Signature logo, Flat peak, Adjustable snapback fastening, Wipe clean with a damp cloth, 100% Cotton. ABOUT HERSCHEL SUPPLY CO 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 have adapted their original designs to fit a new generation, bringing forth a collection of shoppers, holdalls and bumbags with a modern fit, shape and feel.