Costway 21 Cu.Ft Car Roof Bag 100% Waterproof Roof Top Luggage Bag for All Vehicles
$79.99 reg $144.99
Sale save $65.00 (45% off)
In Stock
Eligible for registries and wish lists
Fit & style
- Large Storage Space: Our Upgraded Waterproof Car Roof Bag offers a spacious solution for all your storage needs. It provides a 21 cu.ft large storage capacity for your camping gear, including 2 double tents, 6 sleeping bags, 3 medium suitcases, and more. Therefore, it will be ideal for your family vacation, camping or road trip.
- 100% Waterproof & Tearproof Design: Made with a durable polyester fabric coated by high-quality PVC, our weather resistant roof bag is designed to withstand any weather. Moreover, the widened rain curtain ( /4"), 3-layer waterproof PVC material and reinforced 4-plystrap seams further enhance the bag’s snow-resistant, dust-resistant, UV-resistant, and rain-resistant ability. ^ Wide Application For Cars: No matter what type of vehicle you have, our cargo carrier is designed to fit with it. Whether you drive an SUV, jeep, sedan, pickup truck, or hatchback, or if your car is fitted with cross bar, side rail, basket or even without rack, this versatile roof bag can be easily mounted on it, thanks to the 4 door hooks and 14 reinforced straps. ^ Anti-slip& Safe Design: This rooftop cargo carrier comes with thoughtful anti-slip and anti-theft features. The bag is equipped with a non-slip mat and stripes to prevent the bag from sliding or shifting during your journey. Additionally, waterproof double zippers with lock holes and 4 digit luggage combination lock included to add safety to your belongings. ^ Easy & Simple Assembly: Designed with simplicity in mind. With just a few steps, you can easily assemble and install the upgraded waterproof car roof bag onto your car roof. For cars without car roof racks just peel back the door frame rubber, attach the grip hook onto the door frame, pull the looped strap upward and restore the rubber. As for cars with car roof racks, pull out the buckle and adjust the length, wrap the straps around the roof rack and slide the buckle to find the right fit. ^
- Wide Application For Cars: No matter what type of vehicle you have, our cargo carrier is designed to fit with it. Whether you drive an SUV, jeep, sedan, pickup truck, or hatchback, or if your car is fitted with cross bar, side rail, basket or even without rack, this versatile roof bag can be easily mounted on it, thanks to the 4 door hooks and 14 reinforced straps.
- Anti-slip& Safe Design: This rooftop cargo carrier comes with thoughtful anti-slip and anti-theft features. The bag is equipped with a non-slip mat and stripes to prevent the bag from sliding or shifting during your journey. Additionally, waterproof double zippers with lock holes and 4 digit luggage combination lock included to add safety to your belongings.
- Easy & Simple Assembly: Designed with simplicity in mind. With just a few steps, you can easily assemble and install the upgraded waterproof car roof bag onto your car roof. For cars without car roof racks just peel back the door frame rubber, attach the grip hook onto the door frame, pull the looped strap upward and restore the rubber. As for cars with car roof racks, pull out the buckle and adjust the length, wrap the straps around the roof rack and slide the buckle to find the right fit.
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4.0 out of 5 stars with 7 reviews
quality: 3.5 out of 5
value: 4 out of 5
75% would recommend
4 recommendations
4 out of 5 stars
23 July, 2025Verified purchase
Totally worth it, if on sale
The pictures are misleading - it truly is a "bag" as the item name states, not the neat, seemingly hard case product in the picture. That being said, we've used it once. It held up, kept things dry and was relatively easy to get set up. Considering it was on sale for $75, I would call it a win.
5 out of 5 stars
Thumbs up graphic, would recommend
26 December, 2024Verified purchase
Road trip worthy
We bought this to take Christmas across Texas from Dallas to El Paso! It was perfect, it fit everything we needed and was sturdy and durable. Would buy again!
1 out of 5 stars
Thumbs down graphic, would not recommend
7 November, 2024Verified purchase
Doesn't hold up
One road trip, the bag only had three small carry-on cases in it, and it has a hole.
3 out of 5 stars
3 November, 2024Verified purchase
Be careful
This only lasted one road trip from FL to TX. My 2nd road trip from FL to Maine was a disaster. The bag ripped completely open! Thankfully I had a bungee strap to hold my crates down so they wouldn’t fly off my rack. I like how much you can fit in it & I like the straps all around the bag. I also like that it’s waterproof. & the price is good. I will give it another try but this time I bought tie down straps as a second security measure just in case!
5 out of 5 stars
Thumbs up graphic, would recommend
10 May, 2024Verified purchase
Awesome product!
I drove with this carrier on top of my car literally across the continent, from Georgia to Alaska. Over two weeks it stayed 100% secured to my car and kept my belongings inside bone dry. It is quite large and fits a a lot of stuff, which was great for freeing up space inside my car. It comes with a lock which is great and is easy and quick to set up and take down. This is a great quality product, great price and is a great alternative if you don't want to drop $1,000+ on a hard shell carrier.
5 out of 5 stars
Thumbs up graphic, would recommend
6 April, 2024Verified purchase
Rooftop carrier
Perfect and complete.