Bum bag by Herschel Supply Co, Designed in collaboration with Herschel and Hoffman, Talk about a dream team, Hands-free style, Adjustable body strap, Secure clasp fastening, Herschel patch, Zip closure, External pocket, Can hold up to 3.5 litres. 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.