With all the over-achievement of Tilly, but bigger (older and wiser) and complete with adjustable/detachable shoulder strap you have a wonder-product, Tilly's Big Sis! She is the perfect partner from desk to dinner, workday to holiday; the ultimate hybrid of style and function. With her zip opening, five compartments and inner zip pocket she keeps your prettiest pennies (and whatever else you fancy) locked and lovely.