TUKUOS20 Cubic Feet Car Roof Bag Cargo Carrier, 2022 Heavy Duty Rooftop Cargo Carrier for All Vehicle with/Without Rack,Luggage Lock,8 Lengthen Reinforced Straps,4 Door Hooks,Anti-Slip Mat

Nice carrier for holding a lot of items or less if wanting to. Didn't want a solid shape bag, want to collapse it down smaller when need to. As it was in pic I had a 10x10 dog fence/ dog stroller/ two large area mats/ two roll out cushion mats/ large lawn chair and a large reclining lawn chair. Giving plenty of tie down straps with plenty of length. When tied secure at front back and sides there's no flopping around in the wind. Velcro flaps around the zipper keeps it nice and dry and waterproof. Fair priced especially for the size, completely satisfied. Can't comment on the retainers as was just strap down to the luggage rack.

Las instrucciones estan un poco confusas

It is exactly as described, but ended up damaging the car with attaching the roof straps

Installed on a Subaru Impreza Sport 2016 for a "loaded" trip of 1000+miles.Had to tighten straps once, contents remained dry even at highway speeds in moderate rain.The unit sits on an anti-skid pad of sorts to prevent slipping off the car, it scooted back or the bagged moved? at some point but still functioned properly. The unit is not rigid (pictures show a box like structure)The unit is more like a canoe-adventure dry bag. Worked well for the money, easy to install and remove, did not damage the car.kc

We used this on a vehicle with no roof racks. The instructions were very vague and made the first time putting it together difficult until we figured it out the straps then it was super quick and easy. My husband can install and pack it on top of the car by himself. It is soooo roomie it held luggage for 4 people and has so much room left. Our first installed we had the bag unpause down and backwards so look out for that during the install. Road through mountains, rain, wind and high speeds on the interstate and it remained secure the whole time. Items inside remained dry and no damage. Made our 10 hour strip so much easier and more comfortable.