* Thule's most weather resistant cargo bag ever is large enough to haul your family's vacation gear and durable enough to last over time* IP test verified water resistance sets the standard for car top bag weather protection* Twin compression straps keep cargo securely positioned while in transit, minimizing friction and noise* Padded base protects vehicle finish from abrasion* Heavy-duty, double-stitched webbing straps (included) attach bag to roof rack cross bars or raised rails* 3-sided zipper with generous storm flap provides easy, weather protected access to contents* 16 cu. ft. of cargo capacity