Abstract: A rucksack is provided on its rear surface with a flap (5) which serves as a cover attached at its lower edge to the rucksack body (2). A waterproof skirt (20) is attached to the inside of the flap. When not in use the skirt is housed within the flap which is kept closed. In the event of rain the flap and the skirt can be deployed over the main body of the rucksack thus protecting the contents of the rucksack from the rain.