Abstract: A removable enclosure cover for a swimming pool or the like is disclosed. The enclosure cover includes a plurality of rigid frame members of rectangular panel sections. Th frame members are spaced apart and extend parallel to one another transversely across the pool area. A flexible material is stretched between the frame members. A pair of spaced parallel channel-shaped track members extend along the sides of the pool and guide means is attached to the lower ends of each of the frame members. The guide means has rollers which extend into the interior of the track members. One roller rolls along the bottom of the track members and is mounted on a vertically movable carriage, permitting the frame members to be moved together to one end of the pool deck and collapsing the flexible material to uncover the pool.