The New York City MTA introduced a law that bans dogs from riding the subway unless you can fit inside of a bag or container. This is an effective ban on most larger dog breeds, leaving commuters and their four-legged friends without many options. The Bau-Wau Bag aims to provide a compact solution that conforms to the MTA regulations. Designed to be quickly deployed in subway stations, it allows the user to contain their dog for short rides and avoid fees, without having to carry around a cumbersome dog crate. Utilizing an internal coil spring, it is able to collapse into the base for easy transport. When Metro Police are fast approaching, simply undo the folding strap handle and watch as the bag springs to life. The strap now acts as your handle for pulling your dog onto the subway.