Abstract: A tent has a two-ply door having an air venting fabric as a first ply and a waterproof fabric as a second ply. On the waterproof fabric, a continuous zipper which defines a c-shaped arcuate path is formed. The zipper starts at a side of the tent door and ends at the same side. Zipper slides are mounted on the zipper path, such that a pair of consecutively positioned zipper slides unzips the waterproof fabric to allow ventilation through the air venting fabric when the pair slides towards one another and zips the waterproof fabric to close off ventilation when the pair slides away from each other. Operation of a first of the pair provides ventilation through the top of the air venting fabric and operation of the other provides ventilation through the bottom of the air venting fabric.