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  1. Car Roof Bag
  2. CURT
  3. Roof Basket Mount
  4. Waterproof Material
  5. Medium Capacity
  6. Medium Length
Curt Cargo Bag for Roof Basket - Waterproof - 13.5 Cu Ft

Curt Cargo Bag for Roof Basket - Waterproof - 13.5 Cu Ft

Item # C18220
Our Price: $96.88
You Save: 35%
Car Roof Bag
Shipping Weight: 6 lbs
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38x34x18. Store gear on your vehicle's roof with this waterproof cargo bag. Designed to fit inside roof-mounted baskets that measure at least 38" long x 34" wide. Heavy-duty vinyl fabric, welded seams, and a zipper flap keep gear dry. 1-800-940-8924 to order CURT car roof bag part number C18220 or order online at Free expert support on all CURT products. Great prices and Fastest Shipping for Curt Cargo Bag for Roof Basket - Waterproof - 13.5 Cu Ft. Car Roof Bag reviews from real customers.
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  • Reviews (16)
  • Q & A (0)
  • Photos

CURT Car Roof Bag - C18220

  • Roof Basket Mount
  • Waterproof Material
  • Medium Capacity
  • Medium Length
  • CURT
  • Black

38x34x18. Store gear on your vehicle's roof with this waterproof cargo bag. Designed to fit inside roof-mounted baskets that measure at least 38" long x 34" wide. Heavy-duty vinyl fabric, welded seams, and a zipper flap keep gear dry.


  • Waterproof, soft-sided cargo bag holds up to 13.5 cu ft of gear on your vehicle's roof basket
    • Designed to fit Curt roof-mounted cargo basket (C18115 - sold separately)
  • Heavy-duty vinyl fabric protects your items
    • Keeps water, dirt, and debris out
    • Resists tears and punctures
    • Blocks UV rays to protect bag and contents from sun damage and fading
  • Welded seams help prevent water leakage
  • Flap keeps dirt and moisture from seeping in through the zipper
    • Secures with hook-and-loop closures (similar to Velcro)
  • Bag unzips around the front and side for easy access
  • 4 UV-resistant straps tie bag to cargo basket at 8 points for a secure fit
    • Durable, woven polypropylene fabric
    • Plastic buckles let you tighten the straps to eliminate slack
    • Built-in strap keepers secure loose ends to prevent them from flapping in the wind
  • Bag folds up when it's not in use
  • Black color


  • Application: roof-mounted cargo baskets at least 38" long x 34" wide
  • Storage capacity: 13.5 cu ft
  • Dimensions: 38" long x 34" wide x 18" tall
  • Strap dimensions: 8-7/8' long x 1" wide
  • Weight: 6.8 lbs
  • 1-Year limited warranty

Waterproof Roof-Mounted Storage Bag

Curt Roof Mounted Bag

This waterproof bag fits perfectly inside your Curt roof-mounted cargo basket (C18115 - sold separately) or within most other roof-mounted cargo baskets that can accomodate the bag's dimensions. This durable bag holds your gear on your roof, leaving more passenger room and trunk space. It is made of a heavy-duty material with welded seams and zipper flaps to keep your cargo dry. It opens on the front and side for easy loading with zipper pulls that can accommodate a padlock for added security.

Curt Waterproof bag

The Curt cargo bag is constructed of a thick, UV-resistant vinyl that is designed to keep your gear clean and dry. Welded seams keep water from seeping into the bag.

Curt Rain Flap

As an additional measure of protection for your gear, a vinyl flap covers the zipper and secures with hook-and-loop fasteners (similar to Velcro) to keep moisture out. When rain or snow hits, you can continue on your journey, knowing your cargo is safe and dry.

Simple Mounting on Roof Cargo Basket

This bag is designed to be used with a rooftop cargo basket. Position the bag in your basket, and load the bag with cargo from the back and sides. Then zip up the bag and secure the zipper flap.

Curt Bag Integrated Straps

Adjust the integrated polypropylene straps on the bag to the length needed. Then wrap each strap end around the crossbars and side rails of your roof cargo basket so that the bag is secured at 8 points. Tighten the straps with the sturdy plastic buckles.

Curt Roof Bag Folds Up

When you are not using the bag, just remove it from your roof and fold it up until your next trip.

Lockable Zippers Secure Gear

The zipper pulls have holes through which you can insert a padlock (sold separately) to guard against theft.

18220 Curt Cargo Carrier Bag - Roof Mount - Waterproof - 13.5 cu ft - 38" Long x 34" Wide x 18" Tall

Customer Satisfaction Score:

Customer Reviews

Curt Cargo Bag for Roof Basket - Waterproof - 13.5 Cu Ft - C18220

Average Customer Rating:  4.9 out of 5 stars   (16 Customer Reviews)

38x34x18. Store gear on your vehicle's roof with this waterproof cargo bag. Designed to fit inside roof-mounted baskets that measure at least 38" long x 34" wide. Heavy-duty vinyl fabric, welded seams, and a zipper flap keep gear dry.


I have not been able to use the product on a trip yet, which will happen in mid Sepember. So far I have tried packing with the basket on the ground and it looks like it will hold all that I need it to. I am anxious to see how it works on the mid September trip. Contact me again the end of September to get a review about it's performance

Frank P.


I am so glad that I bought this car roof basket bag. It fit perfectly since it was made for the Curt Roof basket. I have used it several times now and have had no leaks, it easy to install and is quiet in the heaviest wind conditions. It has met my needs perfectly and I often will recommend it. When traveling, after emptying it I fold it flat in the roof rack and bugee it down until I am ready to load again. So easy!!!


Haven’t used it but looks good so far


If you need to pack a lot of stuff on your journey and want it to stay out of the elements. Clean, dry all the above? This is perfect. I’ve used this and I also have the hitch rack bag from curt as well in rain/snow/sleet several times. Everything always stays perfectly dry and clean. Very durable product. Tough material.


Fits good in the basket! Keeps things s afe!



Still water proof through a harsh winter here in Maine! The only small thing is the tie downs, if you have kayak straps I would recommend using them in place of the included straps.


I live in western Washington widely known for one persistent weather condition.
Rain and plenty of it.
Anything I pack in the Curt rooftop bag ALWAYS comes out dry.
5 star satisfaction period.

Bob B.


Still dry and was tested in the rain just yesterday. Still 5 stars and totally satisfied.


Greatly increased the cargo capability of our EcoSport. Easy to put onto the rack and take off.



Still a great bag. Bigger on the inside.


Nice product, well made, no leaks! Fit our rooftop basket type carrier. Nice height for suitcases. Didn't use the supplied straps as I prefer ratchet straps. Did I mention no leaks?


Great service. I lived in st Louis and worked in the insurance business for decades. Never knew about you folks so I checked with my business partner and he gave you 5 stars. Well deserved.


This roof bag is great and spacious! We love it!




This product tore the second time we used it. I would not recommend

Etrailer Expert

Mike L.


@Laura We're sorry to hear that! The Curt # C18220 roof cargo bag carries a 1-year warranty.


Fit perfectly in the basket I have. Going to make packing for our upcoming trip much easier.


Great protection for personal items that need to ride on top.



I haven’t used this yet.




See what our Experts say about this CURT Car Roof Bag

  • Roof Cargo Bag Recommendation to Fit Cargo Basket that Measures 41 by 35
    Yes, the Curt Cargo Bag for Roof Basket # C18220 would be a great option for you. It's dimensions are 38" long x 34" deep x 18" high so it would fit the cargo basket dimensions you mentioned perfectly. I attached a review video for this bag for you to check out as well.
    view full answer...
  • Which Cargo Bag will Fit the Curt Roof Mounted Cargo Basket 18115 on a 2014 Subaru Impreza
    The Curt Cargo Bag for Roof Basket part # C18220 is designed specifically for the Curt Roof Mounted Cargo Basket part # C18115 so you should not have any issues with fit. I have even attached a photo of this basket and bag being used together for you. We have had customers use this combo on a Subaru Impreza without issues before as well.
    view full answer...
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  • Is the Curt Roof Mounted Cargo Basket Waterproof
    Never fear, the Curt Cargo Bag for Roof Baskets # C18220 is waterproof, well constructed and will stand up to the elements on your extended road trip. When you pair it with a cargo basket like the Curt # C18115 to keep the base of the bag off the roof, this bag is the perfect solution to keep your gear dry for the length of your road trip- the only thing it won't do is keep your sleeping bags warm!
    view full answer...
  • Will Curt Cargo Basket and Bag Fit Factory Crossbars of 2019 Honda CR-V
    Since we know the crossbar spread of the factory roof rack you are installing on your 2019 Honda CR-V is 29.5 inches apart and the Curt cargo basket part # C18115 that you referenced fits a bar spread of 29 inches we know this will fit and work well. The cargo bag part # C18220 that you referenced also fits this basket well as it was designed for this basket specifically. This is a great option for your vehicle that also happens to work out to be very cost effective too. I attached a review...
    view full answer...
  • Does Curt Cargo Bag Fit etrailer Rooftop Cargo Basket
    Yes you can absolutely use the 38" long x 34" wide x 18" tall Curt Cargo Bag for Roof Basket # C18220 with the Yakima LoadWarrior Roof Rack Cargo Basket # Y07070. The cargo bag measures 38" long x 34" wide and the LoadWarrior's interior measures 38-1/2" long x 38-1/2" wide so the two will pair together nicely. I have added some links below to video reviews for you to check out as well if you'd like to take a look.
    view full answer...
  • Recommended Cargo Bag for Curt Roof Mount Cargo Basket 18115
    The Curt Cargo Bag for Roof Basket - Waterproof - 13.5 Cu Ft # C18220 is the recommended cargo bag for use with the Curt basket # C18115. No bags are really going to keep out all possible weather so we do recommend that if you are putting things in them that cannot get wet first place those items in plastic bags or containers. I have included a link to a video review of this cargo bag for you. A neat supplemental gift is the wheel mount tire step, # HE4040. This is a great option as opposed...
    view full answer...
  • Cargo Bag To Use in Yakima LoadWarrier Cargo Basket
    You can use the 38" long x 34" wide x 18" tall Curt Cargo Bag for Roof Basket # C18220 with the Yakima LoadWarrior Roof Rack Cargo Basket # Y07070 that you have. The cargo bag measures 38" long x 34" wide and the LoadWarrior's interior measures 38-1/2" long x 38-1/2" wide so the two will pair together nicely. This does not have a pizza bag style zipper though and instead has a zipper that runs along three sides of the bag so that it can open from the top. There isn't an option that opens...
    view full answer...
  • What WaterProof Roof Cargo Bag Is Recommended For 2002 Honda CR-V EX
    Anytime you are going to haul cargo on the roof of your 2002 Honda CR-V you will want to check the owners manual or Honda dealer for what the roof capacity is for your vehicle. The roof capacity will let you know how many pounds you will be able to haul on the roof of your vehicle. If the weight of the roof cargo bag is on top of the crossbars, the weight capacity of the crossbars or the roof capacity is what you will have to adhere to, whichever is the lowest capacity in the system....
    view full answer...
  • Which Roof Mounted Cargo Bags Will Fit a Factory Roof Rack on a 1995 Ford Escort Wagon
    The short answer is that any bag can be installed on the roof of your 1995 Ford Escort Wagon with factory crossbars. You will have to look at the bag measurements to determine if they will fit in between the crossbars or if they will need to rest on top of the bars. If a bag will have to touch the roof, I recommend making sure that the bottom of the bag and roof are both clean to avoid scratches. I also recommend using Non-Skid Roof Protection Pad, # RL100650. You will also want to consult...
    view full answer...
  • Is There a Way to Add the Inno Shaper 100 Roof Rack to My Non-Square Crossbars on My 2018 QX60?
    I have a basket solution for you. While there is a way to attach the Inno Shaper 100 if you have aero-style crossbars on your 2018 Infiniti QX60, but the solution will only work if you have compatible t-slot channels in your current crossbars. I went ahead and attached a picture of the required t-slot dimensions to this answer. I recommend that you measure your channels to make sure the Shaper 100 will fit. Also, Inno only provides this basket in a black finish. This is the # INXA569. If...
    view full answer...
    Image 1 for
  • Can the 13.5 cu ft Curt Cargo Bag be Installed Without Basket on a 2016 Volkswagen Touareg
    The Curt Cargo Bag # C18220 was designed to fit in the Curt Roof Mounted Cargo Basket # C18115 and you wouldn't be able to mount it directly to the roof of your 2016 Volkswagen Touareg. If you'd like a little larger bag that was designed for a bare roof application I recommend the Rightline Gear Sport 2 # RL100A20. Either way I you go it would be helpful to also use the Non-Skid Roof Protection Pad # RL100650 to help protect your roof and to further help keep your cargo bag in place.
    view full answer...
  • Will Thule Roof Rack Basket # TH859XT fit a 2020 Kia Soul with Factory Crossbars?
    The Thule Roof Cargo Basket # TH859XT comes with universal mounting hardware specifically designed to fit your factory crossbar system. It has 3 different sized of u-bolts to fit under your crossbar attached to the bracket on the cargo basket. This will make it fit all different sizes of crossbars. Next, you just have to check how far apart your crossbars are, they call this the spread. This basket will fit most setups. It is designed to fit crossbar spreads of 20 inches to 37 inches...
    view full answer...
  • Can Curt C18220 Cargo Bag Be Used on Vehicle Roof
    There's no reason at all why you couldn't use the Curt # C18220 cargo bag on the roof of your Sienna. The multiple straps allow plenty of tie-down points, so the bag would work very well in either application. Since you have both side rails and crossbars, you'll have plenty of places to attach the straps so a cargo basket wouldn't be necessary, but you could certainly use one if you wish. If you wanted to go that route, a basket like the Rhino-Rack # RMCB would be a great mid-priced choice...
    view full answer...
  • What is a Waterproof Storage Solution for a Roof Cargo Basket?
    It is absolutely fine to leave a roof cargo basket on when it is not in use. This adds a rugged style to the vehicle and means that you will not need to find space inside your home or garage to store the rack between trips. A recommended setup for a cargo basket on a 2016 Jeep Renegade is the Malone AirFlow2 Roof Rack, part # MPG216 combined with the Curt Roof Mounted Basket, part # C18115. This provides additional cargo space and is expandable with the Cargo Basket Extender, part # C18117...
    view full answer...
  • Roof Mount Cargo Basket that Can Hold 2 Curt Cargo Bags # C18220
    Two of the Curt Cargo Bag for Roof Basket - Waterproof - 13.5 Cu Ft Item # C18220 would be 76 inches long which is longer than the interior of the Cayon XT with extension # TH859XT-8591XT so you would not be able to get the full use of at least one of the bags since it would have to be scrunched up to fit. Two of the bags would fit much better in the Yakima MegaWarrior Extra Large Roof Rack Cargo Basket and Extension Item # Y07080-82 which is 78 inches long. The width will not be a problem....
    view full answer...
  • How Much Does the Curt Roof Mounted Cargo Basket Part # C18115 Weigh
    The Curt Roof Mounted Cargo Basket part # C18115 weighs approximately 29 lbs. It is 41-1/2" long x 37" wide x 4" deep and has a weight capacity of 150 lbs though you will want to consult your owner's manual for the vehicle's roof weight capacity as the lower of the two will be your limiting factor. Please also keep in mind that the crossbars on your vehicle will need to be spaced 15", 22", or 29" apart on center in order for the cargo basket to work. If you need a cargo net for this basket...
    view full answer...
  • Recommended Roof Rack and Cargo Basket Options for a 2018 Kia Soul
    In order to carry a cargo basket on the roof of your 2018 Kia Soul you are going to need a roof rack. The correct roof rack for you is the Thule WingBar Evo Crossbar System part # TH711220, part # TH460R, and part # THKIT4051. Then for a roof basket I recommend the Curt Roof Mounted Cargo Basket part # C18115. This basket measures to be 41-1/2" Long x 37" Wide x 4" Deep. It has a 150 lb weight capacity though you will need to confirm the vehicle's roof weight capacity beforehand. You should...
    view full answer...
  • Roof Cargo Bag Recommendation for a 2014 Infiniti QX60 with Factory Roof Rack
    From what I found the factory crossbar spread for your 2014 Infiniti QX60 is 32 inches measured from the center of the front bar to the center of the rear bar. Ideally you will use a cargo bag that fits in between the bars for stability and so the bag doesn't have to partially set on the bars. A bag such as # C18220 is 38 inches long but you could tuck it in to fit between the bars if you wanted. To go to a larger bag you can add a roof basket such as the LoadWarrior # Y07070. But if you...
    view full answer...
  • What Crossbar System Do I Need to Mount the Curt Basket # C18115 to My Flush Rails?
    From your pictures (thanks for including them!), you are definitely correct that your 2019 Toyota RAV4 has flush factory rails. You are also correct in saying that you will need a crossbar system in order to mount the Curt Roof Mounted Cargo Basket - 41-1/2" Long x 37" Wide x 4" Deep # C18115. This basket is a great fit for your vehicle and will give you a maximum weight capacity of 150 pounds to transport your boondocking gear. As far as a waterproof cargo bag for the Curt basket, I...
    view full answer...
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  • 2013 Honda CRV EXL Roof Cargo Bag Recommendation
    We have several great choices for roof mounted cargo bags that will fit your 2013 Honda CRV. My recommendation would be the Curt Roof Top Cargo Bag # C18220. This is one of our best selling roof cargo bags and it has received great ratings and reviews from our customers. It is 13.5 cubic feet to accommodate the cargo needed for your camping trips. The # C18220 has 8 adjustable straps for mounting to your existing crossbars. Another option is that compatible with your 2013 Honda CRV is...
    view full answer...
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