Abstract: A luggage container accessory is disclosed which includes a unitary enclosure assembly fabricated from a light weight and water repellent flexible material such as urethane treated nylon. The enclosure assembly includes top, bottom and front panels as well as a left side panel, a right side panel and a rear panel which each depend upwardly from the bottom panel. A zipper is provided near the top of the left, right and rear panels for selectively coupling and decoupling the side and rear panels to the top. A skirt depends downwardly from the top panel to conceal and provide weather protection to the zipper region. The skirt is secured in place to the side and rear panels (by snaps or the like) to maintain the weather resistant integrity of the enclosure assembly. The enclosure assembly is attached to the vehicle by a first pair of straps extending transversely across the top panel and a second pair of straps extending fore and aft across the top panel.