The Black Crows Dorsa 20L Backpack is a streamlined version of the larger Dorsa 27 pack, designed for days when only a minimum of gear is to be carried. With a waterproof zippered top closure and convenient front stash pockets, the Dorsa 20 is just right for adventures off the tram, cat or heli skiing, and/or toting a bottle of Sauterne and a tin of foie gras up to the glacier.