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

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

Item # C18220

lowest price pledge


Our Price: $70.05

You Save: 36%
Roof Bag

This item qualifies for Free Shipping

Shipping Weight: 6 lbs

Arrives before Christmas with Ground or Free Shipping.
In Stock, Ships Today
Curt Cargo Bag for Roof Basket - Waterproof - 13.5 Cu Ft Medium Length C18220
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
Please enter a valid email address.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

pop out icon replay 360 icon
horizontal rotate icon

Product Images

In Use/Installed


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. Lowest Prices for the best roof bag from Curt. Curt Cargo Bag for Roof Basket - Waterproof - 13.5 Cu Ft part number C18220 can be ordered online at or call 800-298-8924 for expert service.
  • All Info
  • Reviews (4)
  • Q & A (7)
  • Videos (1)
  • Photos
  • Why etrailer?

Curt Roof Bag - C18220

  • Roof Basket Mount
  • Medium Capacity
  • Curt
  • Waterproof Material
  • Medium Length
  • 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

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

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Curt Roof Basket Waterproof Cargo Bag Review

Hey guys, today we're gonna be checking out the Curt storage bag for roof mounted baskets. You can see I've already got it in place here, just to give you a good idea what it looks like.Before we go any further, I'm gonna go ahead and give you some dimensions, that way you can decide whether or not it's going to be a good fit for you. Now, it measures 38 inches long, by 34 inches wide, and it's about 18 inches tall.Now I've got the Curt roof mounted cargo basket installed here, and the bag its it perfectly. It's part number C18115. But it's gonna work with most cargo baskets. It uses four straps, one per corner, to help keep it inside of the basket.Both sides feature buckles, so we can pull it down and keep it tight.

The whole thing is made out of a heavy duty vinyl. It's going to be resistant to tears and punctures. You can rest assured it's going to be safe from the elements on your roof.I've gone ahead and taken it out of the roof mounted basket, just so we can get a better look at it. Here on top you can see all of the stitched anchors for running our straps. Now when we wanna open it up, it only open up from this corner, that way, and this corner, that way.The large flap here in the front is gonna prevent any of the elements getting through to our zipper.

It also features a hook and loop fastener, to help keep that down and prevent the wind from getting underneath of it.Now on the inside, I'm using an air mattress to help blow it up a little bit, so you guys can see the full picture of what it looks like. So here's what I mean about it opening up anodically. As you can see, it doesn't open up the whole bag, but still enough room to put any of our gear inside and slide it to the corner.Here on the inside, it still features that heavy duty vinyl. It's gonna protect our gear from UV rays as well. Now it's up to you on how you wanna load your bag, whether you wanna do it on the ground, or up on the basket.

It may be a little bit easier to do it up in the basket, that way you don't have to lift it up, it may be heavy.But all in all, it's going to be a perfect addition to your roof mounted basket. This is gonna protect your gear from the elements.

Customer Reviews

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

Average Customer Rating:  4.8 out of 5 stars   (4 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.

- C18220

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? 721392

- C18220

Great protection for personal items that need to ride on top. 655301

- C18220

Fit perfectly in the basket I have. Going to make packing for our upcoming trip much easier. 613267

- C18220

This roof bag is great and spacious! We love it! 563292


Ask the Experts about this Curt Roof Bag

Do you have a question about this Roof Bag?

  • 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 #...
    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...

  • 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...
    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...

  • 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...

  • 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...

  • Can the 13.5 cu ft Curt Cargo Bag be Installed Without Basket on a 2016 Volkswagen Touareg
  • Even though the Curt Cargo Bag # C18220 was designed to fit in the Curt Roof Mounted Cargo Basket # C18115 there is no reason why you wouldn't be able to mount it directly to the roof of your 2016 Volkswagen Touareg provided that you have the room for the 38" long x 34" wide x 18" tall dimensions. If you'd like a similarly sized bag that was designed for a bare roof application I recommend the Rightline Gear Sport 1 # RL100S10. Either way I you go it would be helpful to also use the...
    view full answer...

Do you have a question about this Roof Bag?

  • Why

    At we guarantee:

  • Highest quality roof bag for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate roof bag information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Satisfaction Guarantee
    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Video by:
Andrew K
Edited by:
Lindsey S
Expert Research:
Michael H
Expert Research:
Jameson C
Video Edited:
Jacob T
Written by:
Chelsea B
Installed by:
Hayden R
Updated by:
Isabelle B

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.