Super Waterproof - This cargo roof carrier is crafted from 1000D military grade materials to protect your gear and luggage from rain and dust on the road. Make sure you wrap it so ur things don’t get wet Making sure the flap for the zipper, is facing the rear of the vehicle. Easy to Install & Use - The installation of the roof top storage bag is simple.Thanks to the foldable material, 6 built-in tie straps and 8 extra straps, our car top carrier attaches in only a matter of minutes,also easily to fold the entire roof bag inside the duffle bag when not in use. High Capacity & Easy Store - The cargo bag is very roomy that could fit a lot.The roof bag overall size is 51''x39''x17'', Carry 20 cubic feet worth of essentials,can increase vehicle cargo space without impeding on passenger comfort,more capacity, more pleasure! Having this room up top is certainly great for family travel and trips. Sturdy & Security - Our car top carrier made from high-quality material, no toxic or harmful chemicals used.With 8 extra Strong, wide straps and 2 long(3 meters) straps which can across the whole bag to ensure that everything stays in place even on rough and bumpy road.Very secure once strapped on the top rail. Perfect for Trave/Trip - Take the cargo bag to the park, the beach, the sports field, or any place you need to be storaged. Works on ALL vehicles with rack,suitable for cars, vans, SUVs,etc.