--- product_id: 683885938 title: "COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black+Grey, 15 Cubic Ft/414L)" brand: "costway" price: "$110.05" currency: USD in_stock: true reviews_count: 6 category: "Costway" url: https://www.desertcart.us/products/683885938-costway-15-21-cubic-feet-car-roof-bag-100-waterproof store_origin: US region: United States of America --- # 100% Waterproof & Tearproof 4-Digit Combination Lock Security Universal Fit for All Vehicles COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black+Grey, 15 Cubic Ft/414L) **Brand:** costway **Price:** $110.05 **Availability:** ✅ In Stock ## Summary > 🚀 Elevate Your Road Trips with Ultimate Waterproof Roof Storage! ## Quick Answers - **What is this?** COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black+Grey, 15 Cubic Ft/414L) by costway - **How much does it cost?** $110.05 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/683885938-costway-15-21-cubic-feet-car-roof-bag-100-waterproof) ## Best For - costway enthusiasts ## Why This Product - Trusted costway brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Secure & Stable:** Anti-slip mat plus 10 reinforced straps and 6 door hooks ensure zero sliding or scratches on your roof. - • **Spacious Freedom:** Generous 15 cubic feet (414L) capacity fits multiple suitcases, tents, and sleeping bags for your epic trips. - • **Weatherproof Armor:** Triple-layer 840D PVC with rain curtain keeps your gear dry and dust-free, no matter the elements. - • **Universal Compatibility:** Fits SUVs, pickups, wagons, hatchbacks—with or without roof racks—making it your go-to travel companion. - • **Effortless Setup & Storage:** Includes all mounting accessories and a compact drawstring bag for quick install and tidy storage. ## Overview The COSTWAY 15/21 Cubic Feet Car Roof Bag is a durable, triple-layer waterproof rooftop cargo carrier designed for universal vehicle compatibility. Featuring a secure 4-digit lock, anti-slip mat, and reinforced straps, it offers 15 cubic feet of spacious storage ideal for family vacations, camping, and long road trips. Easy to install and store, it protects your gear from rain, dust, and scratches while ensuring a stable, noise-minimized ride. ## Description Product Description Review: Good for occasional use - Great product - easy to store and use. Good if you have limited space for a roof top box and only use occasionally. Just bear in mind that unlike a roof top box, you cannot leave this street-parked. Review: Would Recommend ! - Amazing Quality, Fits perfectly on the car! No Leaking! Only noise is from the anti slip mat! But it's very quiet if you aren't listening for it! We use it all the time travelling over ferry's and 12 hour drives! I would recommend buying a different lock if you want to feel a little bit more safe with your belongings. ## Features - 【100% Waterproof and Tearproof Design】 Made of triple-layer high density 840D PVC with well-stitched 4-ply strap seams, the weather resistant car rooftop bag is snow-proof, waterproof, sunproof and dust-proof. Moreover, to ensure 100% water resistance, the waterproof zipper is protected by 10cm extended rain curtain with hook and loop fasteners. - 【Upgraded Safety】 The car cargo carrier comes with an anti-slip mat, which is designed to protect your car roof from scratches and prevent the luggage from sliding. Besides, it is equipped with a 4 digit combination lock and hooks to prevent the zipper from falling apart at high speeds or bumpy road driving, thus protecting your luggage. - 【Great Compatibility】 This rooftop cargo carrier is suitable for kinds of vehicles, such as SUVS, pickups, wagons, hatchbacks, with side rails, cross bars, basket or without roof racks. Equipped with 10 reinforced straps with buckles and 6 door hooks, you can easily and firmly install the rooftop cargo carrier on roof top without racks to ensure a safe trip. - 【Roomy Storage Space】 With a large capacity of 15 cubic feet/414L, our luggage storage box can accommodate 4 sleeping bags, 3 medium suitcases, and 2 double tents, perfectly solving the problem of lack of storage space in your vehicle. Therefore, it will be ideal for your family vacation, camping or road trip. - 【Easy to Setup & Store】 In addition to the heavy duty rooftop cargo bag, the package also includes 1 drawstring storage bag, 1 anti-slip mat, 6 door hooks, 1 luggage lock and clear installation instructions. You can easily place all accessories in the provided storage bag for future use. Note: Please always face the side with logo and no zipper towards the front of the vehicle to better protect your cargo from rain. - NOTE: During prolonged rainy weather, store the product indoors to avoid water immersion. Ensure it is completely dry before use. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0DQCBW4ZL | | Automotive Fit Type | Universal Fit | | Best Sellers Rank | 15,499 in Automotive ( See Top 100 in Automotive ) 24 in Roof Boxes | | Brand | COSTWAY | | Brand Name | COSTWAY | | Closure Type | Zipper | | Colour | Black | | Country Of Origin | China | | Customer Reviews | 4.7 out of 5 stars 19 Reviews | | Folded size | 56 x 43 x 21.5 cm (L x W x H) | | Included Components | 1 x Car Roof Bag, 1 x Non-Slip Mat | | Item Volume | 15 Cubic Feet | | Item volume | 15 Cubic Feet | | Manufacturer | COSTWAY | | Manufacturer Part Number | 3225GB35815 | | Manufacturer Warranty Description | 1 | | Material | Polyvinyl Chloride (PVC) | | Material Type | Polyvinyl Chloride (PVC) | | Mounting Type | strap mount | | Mounting type | strap mount | | Shell Type | Soft | | Water Resistance Level | Waterproof | | Water resistance level | Waterproof | ## Product Details - **Brand:** COSTWAY - **Colour:** Black - **Material:** Polyvinyl Chloride (PVC) - **Mounting type:** strap mount - **Water resistance level:** Waterproof ## Images ![COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black+Grey, 15 Cubic Ft/414L) - Image 1](https://m.media-amazon.com/images/I/71PxWnBjd+L.jpg) ![COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black+Grey, 15 Cubic Ft/414L) - Image 2](https://m.media-amazon.com/images/I/81F+ZTYyEyL.jpg) ![COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black+Grey, 15 Cubic Ft/414L) - Image 3](https://m.media-amazon.com/images/I/814RJctQ56L.jpg) ![COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black+Grey, 15 Cubic Ft/414L) - Image 4](https://m.media-amazon.com/images/I/81ejmCSsTzL.jpg) ![COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black+Grey, 15 Cubic Ft/414L) - Image 5](https://m.media-amazon.com/images/I/81Eer7pnGoL.jpg) ## Available Options This product comes in different **Size, Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good for occasional use *by G***S on 12 April 2026* Great product - easy to store and use. Good if you have limited space for a roof top box and only use occasionally. Just bear in mind that unlike a roof top box, you cannot leave this street-parked. ### ⭐⭐⭐⭐⭐ Would Recommend ! *by S***E on 21 March 2026* Amazing Quality, Fits perfectly on the car! No Leaking! Only noise is from the anti slip mat! But it's very quiet if you aren't listening for it! We use it all the time travelling over ferry's and 12 hour drives! I would recommend buying a different lock if you want to feel a little bit more safe with your belongings. ### ⭐⭐⭐⭐⭐ Great product *by C***R on 11 April 2026* Hold loads and easy to use ## Frequently Bought Together - COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black+Grey, 15 Cubic Ft/424L) - Amazon Basics Cross Rail Roof Rack, 132 cm, Fits up to 117 cm Spans between Raised Side Rails with Gap, Pack of 2, Black/Silver - Bison Gear Premium Tie Downs - Car Roof Rack Cam Buckle Straps for Surfboard Kayak or Cargo Lashing, 16ft 5m Long, 1in 25mm Wide, Heavy Duty (4 Pack, Black) --- ## 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.us/products/683885938-costway-15-21-cubic-feet-car-roof-bag-100-waterproof](https://www.desertcart.us/products/683885938-costway-15-21-cubic-feet-car-roof-bag-100-waterproof) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-14*