Bum bag by Herschel Supply Co, Tops things off nicely, Adjustable body strap, Secure clasp fastening, Zip closure, External pocket. 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.