Sherpak Go! Waterproof Cartop Gear Stow, from Seattle Sports

Sherpak Go! Waterproof Cartop Gear Stow Roof Bag. From Seattle Sports: "The Sherpak Go! secures to cars with or without crossbars using a universal strap system. Built with heavy-duty UV-resistant vinyl, RF-welded seams, a deeply recessed #10 coil zipper, and heavy-duty plastic hardware. Drops on, straps down, holds gear dry through highway speeds and weather. 15 cubic feet of cargo capacity." DIMENSIONS - 15.5" x 37" x 45". Great quality - this sells for $195 new. First two photos are stock images, to show capacity.