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  1. Car Roof Bag
  2. Rightline Gear
  3. Naked Roof Mount
  4. Roof Basket Mount
  5. Roof Rack Mount
  6. Waterproof Material
Rightline Gear Sport 3 Rooftop Cargo Bag - Waterproof - 18 cu ft - 48" x 36" x 18"

Rightline Gear Sport 3 Rooftop Cargo Bag - Waterproof - 18 cu ft - 48" x 36" x 18"

Our Price: $139.99
You Save: $21.79
Car Roof Bag
Shipping Weight: 7 lbs
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This extra-large cargo bag is great for hauling your gear on top of your SUV or minivan. Waterproof material, a waterproof zipper, and welded seams keep your cargo clean and dry. Mounts to a roof rack, cargo basket or bare roof. 1-800-940-8924 to order Rightline Gear car roof bag part number RL100S30 or order online at Free expert support on all Rightline Gear products. Great prices and Fastest Shipping for Rightline Gear Sport 3 Rooftop Cargo Bag - Waterproof - 18 cu ft - 48" x 36" x 18". Car Roof Bag reviews from real customers.
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  • Reviews (75)
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Rightline Gear Car Roof Bag

  • Naked Roof Mount
  • Roof Basket Mount
  • Roof Rack Mount
  • Waterproof Material
  • Extra Large Capacity
  • Long Length
  • Rightline Gear
  • Gray

This extra-large cargo bag is great for hauling your gear on top of your SUV or minivan. Waterproof material, a waterproof zipper, and welded seams keep your cargo clean and dry. Mounts to a roof rack, cargo basket or bare roof.


  • Cargo bag holds 18 cu ft of gear on the roof of your SUV or minivan
    • Perfect for camping trips, shopping, and family vacations
  • Waterproof, PVC semi-coated polyester mesh XT keeps cargo clean and dry
    • UV protection helps prevent fading - rated UPF 50
    • Watertight, double-sealed bag seams are sewn for strength and welded to block out moisture
  • SZIP Zipper is welded onto bag and concealed under a layer of waterproof rubber to provide protection from rain
    • Zipper pulls have slots that allow you to lock the bag closed and secure it to your roof
    • Included lubricant makes zipper easier to slide
  • Easy loading and unloading - bag unzips three-quarters of the way around
  • Versatile installation - attaches to cargo basket, raised side rails, roof rack, or bare roof
    • Attach to your luggage rack or cargo basket using the 4 integrated straps
    • Mount on bare roof with 4 rubber-coated car clips
  • Aerodynamic wedge shape helps reduce wind drag and noise
  • Drawstring stuff sack lets you store bag when not in use


  • Carrying capacity: 18 cu ft
  • Dimensions: 48" long x 36" wide x 18" tall
  • 1-Year warranty

Rightline Gear Sport on SUV

The Rightline Gear Sport 3 cargo bag holds your gear securely on the roof of your vehicle. It can be mounted on the roof rack, cargo basket, or bare roof of most large SUVs, minivans, or crossovers. This premium, aerodynamic cargo bag is perfect for any camping trip, shopping spree, or family vacation.

PVC Semi-Coated Mesh XT

Closeup of Sport 3 cargo bag material and inner PVC layer

The bag is made of PVC semi-coated polyester mesh XT. The material is treated with WeatherGuard waterproofing and blocks 98 percent of UV rays to help prevent fading. The PVC material is also strengthened with a nylon grid that helps prevent rips and tears. This waterproof fabric stays flexible in hot or cold temperatures so it can be folded for compact storage

Watertight, Double-Sealed Seams

Closeup of Sport 3 cargo bag seam and material

The bag has double-sealed seams to protect your cargo from the elements. The seams are sewn to reinforce the connections and then fused together to create a watertight seal that blocks out rain and snow.

Waterproof Zipper

Diagram of zip right zipper placement on cargo bag

The SZIP zipper is welded onto the surface of the bag and concealed under a layer of waterproof rubber. This gives the zipper more shelter from rain than ordinary under-the-flap zippers. The Zipper also has a waterproof TPU coating. The coating makes the zipper thick and the bond between sides tight. Apply a small amount of the included lubricant to the surface of the zipper to make it slide smoother and easier.

Loaded Pack Right Sport 3 cargo bag unzipped and on top of vehicle

The zipper also runs three-quarters of the way around the roof bag, so you can easily load up the bag or access your gear.

Versatile Mounting Options

Rightline Gear Sport 3 cargo bag tied down to roof rack side rails on top of vehicle

The Sport 3 cargo bag can be attached to a roof rack, factory raised side rails, or a cargo basket with the integrated straps. Simply wrap each strap around a solid anchor point, thread the strap first through the end loop and then through the buckle, and pull it tight.

Rightline Gear Sport 3 clips

To mount the bag on a naked roof, attach the 4 included car clips to the straps and hook them over the door frame weather molding. The hooks have 5/8" openings to fit over the door ledges. Your vehicle's doors should close easily over the hooks to secure them in place.

A roof pad (sold separately) is available to keep the bag from sliding around and to protect the top of your vehicle from scratches.

Locking Options

Zipper in the flap of Pack Right Sport cargo bag

To lock up the bag, run a Rightline Gear locking cable (sold separately) through the cutouts in the zipper pulls. Then, if you want to lock the bag to your roof, run the cable around your roof rack rails.

100S30 Rightline Gear Sport 3 Rooftop Cargo Bag - Waterproof - 18 cu ft - 48" x 36" x 18"

Item # RL100S30

Installation Details RL100S30 Installation instructions

Customer Satisfaction Score:

Customer Reviews

Rightline Gear Sport 3 Rooftop Cargo Bag - Waterproof - 18 cu ft - 48" x 36" x 18" - RL100S30

Average Customer Rating:  4.2 out of 5 stars   (75 Customer Reviews)

This extra-large cargo bag is great for hauling your gear on top of your SUV or minivan. Waterproof material, a waterproof zipper, and welded seams keep your cargo clean and dry. Mounts to a roof rack, cargo basket or bare roof.


Cargo bag is great!.
Waterproof, durable
with easy set up and take down (as advertised)


Drove from Houston, TX to Miami, FL.
Stopped in Bonifay FL to rest for the night.
During the 10 hour drive to Bonifay, I had to pull over at least 10 times to adjust and/or tighten the straps. They did not stay tight. Over time they would work themselves loose and start to slap the top of the vehicle.
That night I was going to fold it up pack our luggage in the Tahoe and return the cargo bag as soon as I got back from our vacation.
I was very happy with the cargo BAG so I decided to go to the local WalMart and purchase a few ratchet straps instead.
Once I tied down the cargo bag with the new straps, instantly it felt more secure. I threw the provided straps in the trash.
We didn't have any problems for the rest of the trip to Miami including the 18 hour drive home.
Something needs to be done with the cheap plastic clips on the provided tie-down straps. They do not stay tight. Over time they work themselves loose and start to slap the top of the vehicle.
I knew the load wasn't going to go anywhere so a few times I would just let it slap the top of the truck for miles because I was tired of dealing with it.

I would definitely recommend this product, but If you are going to purchase this product I would suggest you use a couple ratchet straps, it will definitely make your trip a lot less stressful.


Purchased this cargo bag on the road and the good folks at etrailer shipped to my hotel with no problems. The product is the perfect match for the Smittybilt Defender roof rack for Jeeps - it fills the dimensions and is 16-18" high providing enough room for a lot of gear. The product write-up is correct - rubberized zipper, fold over top, etc. This is a quality product perfect for the Defender roof rack. Many thanks to Donna at etrailer for her help.

P C.


Like it fine . . . . fits like a glove in the Smitty-Bilt roof rack, exactly. Thanks for the folllow-up.


It works. Only complaint is that the zipper is hard to pull, so it's a solid product I recommend. If you are wondering about the size, it is huge. It fits on a newer Honda Civic, but just barely. It is the perfect size for my RAV4.

G. S.


Still working great! My complaint about the zipper being hard to pull is easily solved with the included lubricant… which I should have applied earlier. Score -1 for stubbornness! Anyway, solid product.


We purchased this product for a family vacation from Michigan to Arkansas. Initially it seemed to be perfect for what we needed. The vehicle used did not have cross bars so we had to bring the straps through the car. We used the product exactly as instructed and put nothing but a 3 suitcases and 2 dufflebags into it. On our way home, we had a rainstorm while at one of our short stops. Because the straps pressed against the seals around the door, our vehicle seats, inside roof and floor were soaked. We proceeded to our overnight location. While unloading, we noticed that our items that were in the product were soaking wet, and had to find a laundromat to wash and dry our clothing. When we removed it from the rooftop, we found that due to the straps rubbing from the wind force, the product had tears in it. At this point, we had to figure out how to fit all of our items into the vehicle which made for a very uncomfortable ride for the remaining several hundred miles home. I would not recommend this product for anybody!

Etrailer Expert

Patrick B.


Sorry about the trouble you had and I am glad to see we were able to get it warrantied for you. For future reference, the bag design has been updated with reinforced strap anchor points.

Steve G.


I agree with Sheri. I bought this bag about a year ago to take to Gulf Shores, AL from Southern Indiana, we used it on top of my moms Ford Freestyle and it worked like a charm. About 6 months later I used it on top of my 2011 Jeep Grand Cherokee to take the same trip and it worked ok on the way down. The straps did rub holes in the bag from the wind, and I bought some duct tape to cover the holes so our luggage would not get wet. I purchased the mat to sit on top of the vehicle also. On the trip back I loaded the same way and we had nothing but trouble from the start. We stopped a couple of times because it kept trying to lift up and I tightened the straps 3 or 4 times and I could not even push the bag up off the vehicle. Once on the road again the straps and buckles broke and my bag went flying down the emergency lane on I-65. Luckily the bag held up enough that the luggage stayed in, even though it was all damaged to some extent. At that point the bag was shredded and I had to try and pack everything in our vehicle, which was a trick in itself. Needless to say Im not a fan. If you decide to go with this bag I would buy heavier duty straps, since apparently these only last for about 1 and 12 trips.


I love my roof top carrier. The product was perfect and fit on top of my van. It held a lot. We had another 4 hours to get to our destination and it started raining. When we arrived at our hotel we unloaded and were very relieved that our belongings were dry. :)
Having the storage bag it came in is also very nice. If we every need to buy another cargo bag we definitely will buy one from
I had some questions and called customer service and they were excellent. Took my order over the phone and the product shipped fast.

Gail C.


We still love the product! When we travel with the dogs it makes it much comfortable inside the van. I still would recommend your product!


First of all, etrailer had a video on this bag with COMPLETELY incorrect information. I specifically purchased it based on their video. The weather strip had to be removed in order for it to keep the hooks from slipping off. Due to this, on our 15 hour drive, the noise was INCREDIBLY loud and annoying. When I contacted them regarding the matter, they said "oh, I do see the video is wrong, but we can't accept a return". HORRIBLE customer service. I have used etrailer for years, but after this incident, never again.

As for the bag, if it mounts correctly, it is a great bag. The size is great and it held 3 suitcases plus a bunch of boxes and some other things. It was easy to load (but you may want to put some lubricant on the zippers as they were a bit hard to move) and easy to get on and off the car.

Etrailer Expert

Sierra K.


I contacted the manufacturer and they said the Car Clips will work with your 2014 Hyundai Tucson. The weather stripping does not have to be removed in any Car Clip application. When watching our installation video of the Car Clips, the installer is struggling to keep them in place before shutting the door, see the 12:25 mark on the attached video. I believe this is typical and my suggestion is to keep them loose until you are ready to shut the door, then pull tighter right before the door is to close like the installer does in the video. Unfortunately, because the straps break the seal of the weather stripping there is no way to fully prevent water from dripping inside. The straps are coated to wick water away, but if you are in a hard rain storm for long enough the straps will eventually saturate and water can drip inside the vehicle.


This bag is amazing. I am a rural Mail carrier and I use this bag when I can't fit all my parcels into my rig. The rough extra 18 cubic feet of space makes a huge difference. Easy to mount, easy to open and close.
The only issue I've come across is the threading where the hooks are, they started unfurling, but some needle work and it's right and right all over again. Great product. Keeps everything very dry in this wet PNW climate.


Hauled a ton of stuff in my bag, on top of my Corolla all the way from Florida to Quebec, back in September. My only complaint was the hold down straps funnel rain into the car:-( Soaked me two nights in a row, tying to sleep in the car.


Cargo carrier saved the day. Delivery was fast. Car was not equipped with overhead luggage rack and this fit the bill perfectly. Vacation went on as planned and all items fit comfortably. Waterproofing was also tested and passed despite some torrential downpours along the way. Thank you.

Frank O.


Gonna give it another go in a few weeks.


Have used this Rightline Rooftop Cargo Bag once since I bought it, and was completely satisfied with the durability and size. We have a minivan with no rooftop rails and needed extra storage for our family roadtrip. It seemed to be water resistant and did not experience any water damage to our belongings inside. Dimensions are accurate and held one night of camping gear for our family of 5 (i.e. sleeping bags, pillows, cookware, hiking gear, shoes, etc.). There's no need to spend more money on the expensive brand name bags. This did the job and the soft bag (vs. a hard case) fit the odd shapes of camping items. We were concerned that the weight of the packed bag and wind resistance from driving would cause the straps to eventually give way, but not so. We drove approximately 400 miles on highways and rural roads, and the only complaint was the loud floppy noise from the bag in the wind. Otherwise, it functioned as I had hoped and am pleased with my purchase.


The inaugural trip for the cargo bag was from DFW to Itasca, MN. It held well and kept our gear dry.

Couple things about the product you need to be aware of (and this goes for all roof cargo):
1) Know the weight limit the roof of your vehicle can support. If you exceed it, you *can* have issues. With a cargo bag this big, it's easy to reach that limit.
2) If you have a sunroof -- put some duct tape or something where you _can't_ open it by habit or accident. That will save you some grief.
3) The default tie downs on this bag are adequate, but you need to practice to tie it down, quickly, safely and without flappy noises!

I would buy again.


I am very happy with this purchase. I only used it once, on vacation last year, but I intend to use it again when we travel this year. There was a second benefit to having this tote on vacation last year. The place we stayed didn't have a cover over the bike rack area and it rained on one of the days. I used this soft tote as a cover for the bikes and the tie downs allowed me to secure it to the bikes and save them from getting wet. It is very spacious and it stores much easier than a hard roof carrier. Highly recommended.


I highly advise not to purchase this product. We were 60 miles into our trip, and our bag flew off the roof. Thank God there was no one immediately behind us. We did try to strap it back on to the roof before we noticed the rings that the straps go through were plastic. They were all either cracked or gone. We also decided not to run the straps over the back because it had torn while sliding down the highway and the hole was tearing like paper. I do believe this would be a decent product if the rings were metal. After reading other reviews, I see that we are not the first one to lose their bag off the roof. I would definitely recommend the hitch mounted system as you will also save on fuel because of the wind resistance


This luggage bag far exceeded our expectations. We have been traveling with it for about a year now (including a 3 month journey across the US and through Canada).

It was more than enough to fit everything our family of 5 needed on top of our minivan, and has survived countless storms (both with rain and even hail at times), and has never once lost its waterproof quality. All items put inside stay completely dry! We plan on not only using this luggage bag for as long as we possibly can, but if for some reason it ever does need to be replaced, we will immediately get another one just like it!

I would recommend this to anyone and everyone! One of the best investments I've ever made!


Worked beautifully. Had one on daughters Toyota RAV4 and one on the trunk of my Honda Accord and hauled her possessions back from Rexburg ID to Colonial Heights VA over 3 days and two flat tires. They held thru wind rain, fog and heat. No content damage. I did a few extra tie-down straps for interstate speed driving security for my own peace of mind. You have an excellent product.


I bought this travel bag last year for a 16 day road trip from Kentucky to Utah. The first day of travel was wet and rainy. Water started to leak in where the straps hook inside the door frames. I stopped and tried to adjust the strap placement and while it helped a little the water continued to drop inside the car.

Later in the trip the coating on the bag started to crack and tear. Maybe it was the 80 mph speed or the dust from Moab desert but now our gear was getting wet every time it rained.

When we got home I noticed that the bag scratched the top of the car even after we purchased the additional mat to help prevent this from happening.

I knew this was a starter bag but I thought it would last more than one trip. I wish I had bought something higher in quality and not have wasted my money.


Trailer was a great retailer, that is where the positive stops. The Right line cargo system was horrible, the instructions were vague at best. When I got home from my trip, the wind had torn the entire top of the carrier apart. I was supprised I didn't loose any cargo. There was no way that if it would of rained that anything would of been dry. Do not waste your money on this product...cause. it would truly be a waste!


No complaints. Had 11 hour road trip to gulf shores. Had heavy rain on way down, no leaks. Fits a lot of cargo. With no skid mat sits in place perfectly. Used without crossbars and had no issues running straps through car under doors


I needed this product to carry four peoples' luggage during a roundtrip drive from Virginia to Florida over New Year. I fit very will in the back of my pickup and held more luggage than I had anticipated. The zippers were a bit stiff, especially in the bitter cold we experienced, but otherwise was great. The straps worked very easily with the tie down points in the bed of the truck but I really didn't need to use them because of the weight of the luggage. For the price and its utility, it was the best product I could imagine. It will certainly be used again in the future and it will be interesting to see how long it holds up.


Ordered the RL100S30 at the last minute and customer service was extremely helpful in ensuring everything from the product to the shipping was set up correctly. Package arrived the next day as promised, installed it on 2007 Ford Escape and headed out on our road trip. Here are my 3 observations since using this product:
1. Large capacity - fit a full size suitcase, regular size duffel bag, very large duffel bag, and 2 carry on suitcases with ease.
2. Rained most of the way from TN to FLA and had no issues with any water getting inside and ruining our luggage.
3. Easy setup and tear down. Took about 10 minutes the first time hooking it up and 5 minutes thereafter. 3-5 minute tear down.
Would definitely recommend not only this product, but etrailer as well for their excellent customer service (Kimberly D).


I am definitely convinced that this Rooftop Cargo Bag is waterproof. Upon initial inspection the workmanship seems exceptional. If we are not making these in the USA, we should be.
I am traveling soon from Longview, Wa. to Katy, Tx. (about 2500 miles) I will let you know how it holds up


worked great with out a roof rack, on a 2006 chevy Malibu. don't bother with the clips unless you have a roof rack. I wish the straps were longer, if I had packed the bag full would not have had a long enough strap to go all the way around bag and thru car. but a great option for the long haul. drove from Delray Beach to Pittsburgh Pa.


The product worked well. There was a learning curve to installing it. Unfortunately I did not have the carrier stuffed full. This caused some wind damage. Once I realized this was happening I used extra straps to cinch it down better.


This carrier is the largest waterproof bag that I found. I will be using it to transport various sundries to and from my children's college. Of course the lock will be necessary when we need to park it overnight and so no worries. The best little gizmo--the 'step stool' is ingenious!


I was looking for a solution to travel space. In the past there were other roof top carriers that were poorly made and didn't last long, or were hard to store.
This unit is very durable and has held up well in rough weather, and now one year later is continuing to provide the best solution I've found. No leaks, no tears, sturdy. Buy one - you won't regret it.

Show More Reviews

See what our Experts say about this Rightline Gear Car Roof Bag

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  • How to Determine Roof Capacity of a Vehicle for Roof Top Cargo Bag
    You would need to check the owners manual for your 2015 Forester or with Subaru to determine the roof capacity. I was able to determine that it is 150 lbs as that is listed on page 8-14 of your manual. The Rightline Cargo Bag part # RL100S30 is a very large bag that measures 48" x 40" x 19" which would carry up to 18 cubic feet of cargo. You would want to measure the dimensions of your roof to see if this would be a fit or not. I also recommend a protective pad, # RL100650, to protect...
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  • Will the Rightline Cargo Bag part # RL100S30 fit a 2006 Ford Freestyle
    Yes, the Rightline Cargo Bag part # RL100S30 will fit all roof styles so it would work great on your 2006 Ford Freestyle. Check out the review video I attached as well. I also recommend a protective pad, # RL100650, to protect the roof when using the bag.
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  • Will the Rightline Gear Sport 3 Rooftop Cargo Bag 48x40 Fit a 2015 Dodge Journey Crossroad
    Yes, the Rightline Gear Sport 3 Rooftop Cargo Bag part # RL100S30 will fit on your 2015 Dodge Journey Crossroad. If you have raised side rails then it can be secured to these or you can mount it to a bare roof without raised side rails no problem. The Rightline Gear Sport 3 Rooftop Cargo Bag comes with everything you need for either option but I highly recommend the Non-Skid Roof Protection Pad part # RL100650 to go along with this as it protects the surface and prevents the bag from moving.
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  • Would the Rightline Sport 3 XL Rooftop Cargo Bag Fit a 2015 Toyota Rav4 with Naked Roof
    The Rightline Sport 3 XL Rooftop Cargo Bag # RL100S30 that you referenced does not require any roof rack at all to install secure to a vehicle. If you have a totally naked roof on your 2015 Toyota RAV4 this bag is capable of being secured to it. I also recommend a protective pad, # RL100650, to protect the roof when using the bag. Basically this bag can attach to all roof styles and would work well for you. I attached a review video for you to check out as well.
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  • Would the Rightline Sport 3 XL Rooftop Cargo Bag # RL100S30 fit a 2002 Chevy Prizm
    To determine if the Rightline Sport 3 XL Rooftop Cargo Bag # RL100S30 would fit the roof of your 2002 Chevy Prizm you will need to measure the available space you have on your roof. The dimensions of this bag are 48" long x 40" wide x 19" tall. If you have room for it on your vehicle it should work well even though this is typically used on larger vehicles like SUVs and vans. I also recommend a protective pad, # RL100650, to protect the roof when using the bag.
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