An article of luggage for a sport vehicle, such as a snowmobile or a motorcycle, includes a bag having at least one strap for releasably securing the bag to the sport vehicle, and a map pouch which is releasably attached to the bag. The releasably attached map pouch may include at least one strap which allows the map pouch to be secured to the sport vehicle independent of the bag. The combination tank bag with releasably attached map pouch provides the operator of the sport vehicle with an opportunity to secure the bag to the sport vehicle with or without the map pouch releasably attached to the bag, and allows the map pouch to be secured to the sport vehicle without the bag, as desired.