--- product_id: 406125566 title: "Car Roof Bag, 21 Cubic Feet Large Roofing Cargo Carrier Bags Waterproof Soft Rooftop Luggage Storage Box for Any Cars with Roof Rack/Rails/Bars, includes Anti-Slip Mat" brand: "marretoo" price: "8164704₫" currency: VND in_stock: true reviews_count: 7 category: "Marretoo" url: https://www.desertcart.vn/products/406125566-car-roof-bag-21-cubic-feet-large-roofing-cargo-carrier store_origin: VN region: Vietnam --- # 840D ultra-durable PVC fabric 21 cubic feet extra-large capacity 100% waterproof with sealed zippers Car Roof Bag, 21 Cubic Feet Large Roofing Cargo Carrier Bags Waterproof Soft Rooftop Luggage Storage Box for Any Cars with Roof Rack/Rails/Bars, includes Anti-Slip Mat **Brand:** marretoo **Price:** 8164704₫ **Availability:** ✅ In Stock ## Summary > 🚗 Elevate Your Road Trip Game with Marretoo’s Ultimate Roof Bag! ## Quick Answers - **What is this?** Car Roof Bag, 21 Cubic Feet Large Roofing Cargo Carrier Bags Waterproof Soft Rooftop Luggage Storage Box for Any Cars with Roof Rack/Rails/Bars, includes Anti-Slip Mat by marretoo - **How much does it cost?** 8164704₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/406125566-car-roof-bag-21-cubic-feet-large-roofing-cargo-carrier) ## Best For - marretoo enthusiasts ## Why This Product - Trusted marretoo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **All-Inclusive Travel Kit:** Comes with storage bag, extra straps, password locks, and friendly customer support—travel smarter, not harder. - • **Built to Brave Any Weather:** Heavy-duty 840D tearproof PVC fabric and reinforced seams ensure your gear stays safe rain or shine. - • **Stay Secure, Drive Confident:** Includes anti-slip mat and 6 door hooks to keep your load stable and your mind at ease on every journey. - • **Effortless Installation & Access:** 8 adjustable straps and dual-side openings make setup and loading a breeze—no more wrestling with your cargo. - • **Spacious Enough for the Whole Crew:** Generous 21 cubic feet capacity fits luggage for 5-7 people, perfect for family road trips or group getaways. ## Overview The Marretoo Car Roof Bag offers a rugged 21 cubic feet of waterproof storage crafted from ultra-strong 840D PVC fabric. Designed for any car with roof racks, it features reinforced seams, waterproof zippers, and an anti-slip mat to secure your gear through all weather conditions. Easy to install with 8 straps and dual-side access, it’s the perfect travel companion for millennials craving extra space without sacrificing style or convenience. ## Description Waterproof 21 cubic feet roof bag with heavy-duty 840D PVC fabric, reinforced seams, and anti-slip mat for secure, weatherproof storage on any car with roof racks. Review: Perfect for Road Trips - A Must-Have for Extra Luggage Space - I recently took the Marretoo Car Roof Bag on a long road trip, and I have to say, it made the journey so much easier! We were heading off for a week-long camping trip and needed extra space for all our gear. This roof bag provided 21 cubic feet of storage, which was more than enough to fit everything we needed without overcrowding the car. I was able to pack up camping chairs, a tent, sleeping bags, and more—essentially everything we needed for the trip—and still had room to spare. One of the things I really appreciated was how well the bag performed in less-than-ideal weather. It rained during part of our trip, but the bag kept everything dry and secure. The material feels tough and durable, and the zippers were easy to operate, even with gloves on. The anti-slip mat that came with it was also super helpful in keeping the bag stable on the roof, preventing any movement while driving. I also found the installation to be surprisingly easy. We have a roof rack, and it took just a few minutes to strap the bag down securely. It stayed in place the whole trip without any shifting, and I didn’t have to worry about it at all. When we weren’t using it, the bag folds up neatly, making storage a breeze, which was a bonus. However, I did notice one small thing—because the bag is on the larger side, it can look a bit bulky when it’s not fully packed. If you only have a few things to carry, it might seem a little excessive. Also, if you’re loading it onto a higher car, you might need a little extra reach to get it securely placed, but once it’s on, it’s all good. In all, I’m really happy with the Marretoo Car Roof Bag. It made our trip so much smoother by freeing up space inside the car, and knowing everything was protected from the weather was a huge relief. If you’re looking for a way to bring extra luggage along on a road trip or vacation, I highly recommend this bag. It’s durable, waterproof, and super easy to use! Review: Roof bag review - 5 stars - I, like others, read the reviews carefully before purchasing. So it's only fair that I also add one! Really impressed with our first use this weekend (2hrs each way on dual carriageway and country roads). It does take a bit of time to set up but I expected that. I'm sure it'll be quicker the more it is used. Like some advised, I stopped about 10 minutes into each journey to check the tightness of the straps. The first journey I had to tighten; no issues the second journey. We bought the 21l version. It fitted a camping table, 3 large camping chairs, 2 smaller ones, 4 airbed boxes, a large rucksack, a small suitcase, various bits of sporting equipment and 4 pillows. Really impressed with the capacity. Overall, if you don't want to spend a fortune on rail bars and a box, then this is something I would seriously consider. I suppose the ONLY thing you may wish to take into consideration is it does sit on the car roof, albeit with an anti-slip mat. I have quite an old car so wasn't bothered if it got a few scratches - it didn't btw - but is worth adding to the review. ## Features - 【840D WATEARPROOF MATERIAL】 Made with Heavy-Duty 840D abrasion-resistant tearproof PVC fabric，This 840D PVC fabric material is 1 to 2times stronger than 700D PVC fabric, which most other rooftop bags adopts and can easily rip，This ultra-durable car roof cargo carrier can easily cope with all kinds of bad weather and long-distance travel - 【SUPER WATERPROOF DESIGN】 Made of 100% waterproof material, the waterproof effect of our vehicle cargo carriers will exceed your expectations. It includes waterproof zippers with openings on both sides, widened waterproof flaps, waterproof straps and reinforced seams. To best protect your roof top cargo bag from water penetration - 【EXTRA LARGE 21 CUBIC FEET】 L52" x W39.5" x H17.5" (594L) Large space for all luggage of 5-7 people, suitable for family long-distance travel，Partial reflective strips are used to make driving at night safer and make your car roof look more personalized - 【EASY to INSTALL and OPEN on BOTH SIDES】-The roof top carrier bag is designed with 8 straps, which can be easily fixed to any car in just a few minutes. The open design on both sides makes it easier to put the roof bag on the car. Loading and unloading cargo after topping - 【YOU WILL RECEIVE】1* Marretoo 21 Cubic Feet Heavy-Duty Roof Cargo Bag, 1* storage bag, 1* anti-slip mat, 6* door hooks, 2* extra luggage straps. 2* Password Lock and our friendly customer service. if the car roof bag fails, we will replace or refund as you want ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09NMZLP2C | | Best Sellers Rank | 2,469 in Automotive ( See Top 100 in Automotive ) 2 in Roof Boxes | | Brand Name | Marretoo | | Closure Type | Zipper | | Colour | Black | | Country Of Origin | China | | Customer Reviews | 4.6 4.6 out of 5 stars (333) | | Included Components | A Marretoo Car Roof Bag, 21 Cubic Feet Large Roofing Cargo Carrier Bags Waterproof Soft Rooftop Luggage Storage Box for Any Cars with Roof Rack/Rails/Bars, includes Anti-Slip Mat | | Item Dimensions L x W x H | 132.1L x 100.3W x 44.5H centimetres | | Item Type Name | fabric | | Item Volume | 21 Cubic Feet | | Item Weight | 4.78 Kilograms | | Manufacturer | Marretoo01 | | Manufacturer Part Number | Marretoo02 | | Manufacturer Warranty Description | manufacturer warranty for 90 days from date of purchase | | Material Type | Polyvinyl Chloride (PVC) | | Mounting Type | Roof Mount | | Shell Type | Soft | | UPC | 794775044382 | | Water Resistance Level | Waterproof | ## Product Details - **Brand:** Marretoo - **Colour:** Black - **Item weight:** 4.78 Kilograms - **Material:** Polyvinyl Chloride (PVC) - **Product dimensions:** 132.1L x 100.3W x 44.5H centimetres ## Images ![Car Roof Bag, 21 Cubic Feet Large Roofing Cargo Carrier Bags Waterproof Soft Rooftop Luggage Storage Box for Any Cars with Roof Rack/Rails/Bars, includes Anti-Slip Mat - Image 1](https://m.media-amazon.com/images/I/61jJmzNASHL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: Why does evwryone buy the bison premium tie down straps ? are they just better than straps which come with bag?** A: No sure but we only use the straps that came with the roof bag....they do the job. **Q: do the straps hold effectively? and are they robust? my concern is if they are easily damaged** A: The straps are robust, I was really pleased with this purchase it exceeded my expectation. I used it a few times now with its first trip to Cornwall from Derbyshire for a camping holiday.. would have been lost without it, well worth the money. **Q: what are the dimensions of the box when on the roof please? Need length and width if possible** A: I’m not really sure I bought it for a family member but they used it on top of a van if that helps, **Q: What size would be best for camping trips?** A: With the 21ft bag and a large estate car I managed to pack for 2 adults and 2 children for a 4 night camping trip ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect for Road Trips - A Must-Have for Extra Luggage Space *by J***. on 29 December 2024* I recently took the Marretoo Car Roof Bag on a long road trip, and I have to say, it made the journey so much easier! We were heading off for a week-long camping trip and needed extra space for all our gear. This roof bag provided 21 cubic feet of storage, which was more than enough to fit everything we needed without overcrowding the car. I was able to pack up camping chairs, a tent, sleeping bags, and more—essentially everything we needed for the trip—and still had room to spare. One of the things I really appreciated was how well the bag performed in less-than-ideal weather. It rained during part of our trip, but the bag kept everything dry and secure. The material feels tough and durable, and the zippers were easy to operate, even with gloves on. The anti-slip mat that came with it was also super helpful in keeping the bag stable on the roof, preventing any movement while driving. I also found the installation to be surprisingly easy. We have a roof rack, and it took just a few minutes to strap the bag down securely. It stayed in place the whole trip without any shifting, and I didn’t have to worry about it at all. When we weren’t using it, the bag folds up neatly, making storage a breeze, which was a bonus. However, I did notice one small thing—because the bag is on the larger side, it can look a bit bulky when it’s not fully packed. If you only have a few things to carry, it might seem a little excessive. Also, if you’re loading it onto a higher car, you might need a little extra reach to get it securely placed, but once it’s on, it’s all good. In all, I’m really happy with the Marretoo Car Roof Bag. It made our trip so much smoother by freeing up space inside the car, and knowing everything was protected from the weather was a huge relief. If you’re looking for a way to bring extra luggage along on a road trip or vacation, I highly recommend this bag. It’s durable, waterproof, and super easy to use! ### ⭐⭐⭐⭐⭐ Roof bag review - 5 stars *by M***S on 28 July 2025* I, like others, read the reviews carefully before purchasing. So it's only fair that I also add one! Really impressed with our first use this weekend (2hrs each way on dual carriageway and country roads). It does take a bit of time to set up but I expected that. I'm sure it'll be quicker the more it is used. Like some advised, I stopped about 10 minutes into each journey to check the tightness of the straps. The first journey I had to tighten; no issues the second journey. We bought the 21l version. It fitted a camping table, 3 large camping chairs, 2 smaller ones, 4 airbed boxes, a large rucksack, a small suitcase, various bits of sporting equipment and 4 pillows. Really impressed with the capacity. Overall, if you don't want to spend a fortune on rail bars and a box, then this is something I would seriously consider. I suppose the ONLY thing you may wish to take into consideration is it does sit on the car roof, albeit with an anti-slip mat. I have quite an old car so wasn't bothered if it got a few scratches - it didn't btw - but is worth adding to the review. ### ⭐⭐⭐⭐ Perfect *by G***L on 6 August 2025* Excellent for going to and from music festivals. Honda crv, no rails perfect fit ## Frequently Bought Together - Marretoo Car Roof Bag, 21 Cubic Feet Large Roofing Cargo Carrier Bags Waterproof Soft Rooftop Luggage Storage Box for Any Cars with Roof Rack/Rails/Bars, includes Anti-Slip Mat - Bison Gear Premium Tie Down Straps - Car Roof Rack Straps for Surfboard Kayak or Cargo Lashing, 16ft 5m Long, 1in 25mm Wide, Heavy Duty Cam Straps with Buckle (4 Pack, Black) - Car Door Step Up Car Doorstep Folding Ladder U Shaped Pedal With Safety Hammer Function Car Accessories Easy Access To Rooftop For Car For Suv Rv Off-road Vehicle with 8 Car Rear Seat Hook --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/406125566-car-roof-bag-21-cubic-feet-large-roofing-cargo-carrier](https://www.desertcart.vn/products/406125566-car-roof-bag-21-cubic-feet-large-roofing-cargo-carrier) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-21*