How Much Can Fit Into A Roof Bag?

One of the profitable investments for big families or anybody is having a Roof bag(s), especially those who do a lot of traveling.

This leads us to consider how much can fit into a roof bag so that you don’t overload it. You may have a soft roof bag, that is lighter and easier to attach to the car. But have you considered the volume of cargo it is worth carrying?

So how much weight can fit into a rooftop bag? To determine what a rooftop bag can hold, you need to confirm the size and capacity of that roof bag. A rooftop bag of size 11 can allow 11 cubic feet of luggage, while a rooftop bag of size 15 can hold 15 cubic feet of luggage.

For a detailed explanation, take a look at the table below.

Rooftop bag size How much can fit in Weight Luggage
Rooftop bag size 11 11 cubic feet 100-120 lbs 4 medium-sized luggage
Rooftop bag size 15 15 cubic feet 120-150 lbs 5 medium-sized luggage

Roofbag carriers are flexible and this means that how much will fit into the bag is not only dependent on the size of the bag but also on the roof of the car.

It is easy to say that the volume of load that will fit into a rooftop bag depends on the size of the rooftop bag. But the reality is that it becomes a strong concern if you had not considered the size and shape of the bag when buying.

Needless to say, a wide bad will provide an opportunity for more storage and, most of them can be opened from either side.

If you use a rooftop bag that is wide, you will discover that it is convenient to use.

Items like bicycles, on the roof simultaneously, will require medium-width bags that will make much more sense.

In some of our roof bags carrier review articles, we have even had some users saying that they loaded their carrier with 150 lbs of cargo without a problem.

However, when filling your rooftop bag, you want to make sure you are considering the capacity description of the carrier and precautions in the product description so that you don’t overload it.

You also want to make sure that you distribute weight over a wide area of the roof, the load you fill your rooftop carrier with can include clothes, camping gear,

To explain how flexible quality roof bags are, you can even include suitcases inside the RoofBag carrier. A smart way to go about this, however, is to use one space inside the carrier more efficiently.

Above all, when putting stuff into a roof bag, you want to make sure sure the box is at least long enough to accommodate the longest objects you might want to put in it.

Getting a roof bag can be as easy as kick-starting the car with the car key but there are important safety procedures to take when packing and using a roof bag on your car rooftop.

What are the different sizes of roof bags?

A very important factor to consider when choosing a rooftop bag is the size of the product as it pretty much determines what length of an item you can include in the cargo.

In the context of knowing how much can fit into a roof bag, there are different sizes of roof bags that are ideal for both family size and anyone.

Here are the two ideal different sizes, a very good product example and where you can see them buy.

11 cu. ft Car Top Carrier

With a roof bag carrier that is 11 cu. , you will be able to put in 11 cubic feet of contents, in other words, this size of roof bag carrier allows you to put in about 4 medium-sized suitcases.

You can put in contents such as Suitcase of 20″H x 14″W x 8″L, 22″H x 14″W x 8″L, 26″H x 18″W x 11″L, 28″H x 18″W x 12″L and Folding Chair of 36″H can be put into 11 cu. ft Car Top Carrier.


This RoofBag Rooftop Cargo Carrier is a very good and durable example of a rooftop cargo carrier that is 11 Cubic Feet. It is made in the USA and it is Waterproof.

It will work for cars with Racks or Without Racks as it features a Roof Protective Mat, Storage Bag, and Straps among other amazing features.


RoofBag Rooftop Cargo Carrier is a USA-made RoofBag cargo carrier that is highly reliable and covered with a 2-year warranty. It is, in fact, among the highest-rated rooftop cargo carrier.

People who have used this 11 cu. Rooftop bag carrier confirms that their belongings are safe with the roof cargo carrier. This is confirmed as it features the strongest straps that are wide and have a seat-belt style.

You can secure your car carrier with this product at any highway speed. Part of its features is that it is 100% waterproof – including a waterproof coated zipper and straps, and zipper flap.

So since you can save fuel, protect your roof, and travel quietly, this 11 cu. A sized cargo bag with an aerodynamic design appears to be an ideal product for this kind of size. Plus, it is built to last due to the Heavy-duty fabric that is peel-proof and tear-resistant.

Where to buy

RoofBag Rooftop Cargo Carrier is a USA-made RoofBag cargo carrier that can be found on major online stores like Amazon. If you want to check out the product, you can see it HERE.

15 cu. ft Car Top Carrier

Another example of the ideal different sizes of rooftop carriers is the RoofBag carrier with size 15  that is capable of holding 15 cubic feet of contents.

This means that 15 cu. ft Car Top Carrier will be able to contain about 5 medium-sized suitcases.

Some of the contents that will fit the 15 cu ft car top carrier includes Suitcase of 20″H x 14″W x 8″L, 22″H x 14″W x 8″L, 22″H x 14″W x 10″L, 26″H x 18″W x 11″L, 28″H x 18″W x 12″L, a box of 18″H x 12″W x 9″L, and of course, a folding Chair of 36″H


ToolGuards Car Top Carrier Roof Bag is beyond excellent when giving examples of rooftop carriers that are 15 cubic ft. Not only because it si versatile for both cars with and without racks but also because it is equally 20 Cubic ft, and comes with a protective mat.


ToolGuards Car Top Carrier Roof Bag is truly a waterproof one, unlike other fewer quality ones that claim to be waterproof but aren’t.

This ToolGuards Car Top Carrier Roof Bag is also made with heavy-duty coated tarpaulin and fabric-guarded, coated zippers. Even though it is not a cheap roof bag, it is worth the price because it will not fall apart and tear because it is made with extra heavy-duty materials that withstand the road.

When you are advised to not save few bucks to buy Cheap Car Roof Bag Just To Scratch Up Your Car’s Roof, then you are advised at the same time to try quality ones like this ToolGuards Car Top Carrier Roof Bag that features a bonus protection mat which will save your expensive paint job.

Reading most reviews under this product, I have noticed that this rooftop bag makes adventure easy. To top it all, this product offers a 2-year 100% money-back guarantee.

Where to buy

ToolGuards Car Top Carrier Roof Bag is a high rated RoofBag cargo carrier that can be found on major online stores like Amazon. If you want to check out the product, you can see it HERE.

Wrapping up

I hope you have been able to know how much can fit into a roof bag and the factors that surround it. I mentioned that a roof bad is flexible, so most depending factors is about your car roof and not the roof bag.

However, I must mention that every roof bag most certainly has a maximum capacity and this is advertised for an important.

If a rooftop carrier is to hold 320-litres worth of luggage and belongings, do not go overload which may cause pressure to be put on the fabric or fastenings.

An unsafe mistake you should avoid when filing your carrier is over-filling a roof bag so that you don’t end up damaging your roof bag or even worse, not being able to fasten properly.

Make sure you work within the specified capacity of your roof bag so do not ignore reading the product description before buying, and its user manual after reading.

Are you having any difficulties filling or securing your roof bag to your car rooftop, and for some reason, you have not seen answers in this post? Share in the comment section and I will be glad to provide solutions.

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