The Krystal Convertible Handbag Mini is a medium size bag that with one pull of the magic straps converts to a backpack. The lining is a waterproof canvas with a zippered pocket, a slip pocket and also has a built in credit card slot/slip pocket. The exterior of the bag has a zippered pocket and a slip pocket. Everything you need to stay organized and hands free. This beauty also features rainbow hardware and zippers.