Quick Summary
The COSTWAY car roof bag is a rooftop luggage carrier with a stated 21 cubic feet capacity, or 574 L. It is designed for roof storage and comes in black and grey, with an anti-slip mat, combination lock and straps included.
The bag is described as 100% waterproof and uses 840D PVC material. It also includes waterproof zippers with an extended rain curtain, plus 10 reinforced straps and 6 door hooks for securing it to compatible vehicles.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | COSTWAY, useful for identifying the exact product family. |
| Product type | Car roof bag / rooftop luggage storage carrier for loading items on the vehicle roof. |
| Capacity | 21 cubic feet / 574 L, which is the main size figure for checking how much roof storage you need. |
| Colour | Black + grey, relevant if you want the selected finish to match your vehicle or preference. |
| Material | 840D PVC, stated as part of the bag construction. |
| Lock | Combination lock included, with zippers described as using a lock to help keep them closed. |
| Included securing parts | 10 reinforced straps and 6 door hooks, which affect how the bag is fitted to the vehicle. |
| Extra items | Anti-slip mat and drawstring bag included, useful for stability, roof protection and storage. |
What to Compare Before Buying
- Capacity: The stated 574 L capacity is the main check if you need roof storage for luggage, camping gear or bulky items.
- Vehicle fit: The bag is described for use without racks, side rails, cross bars or a roof basket, so check that this fits your vehicle setup.
- Securing method: Compare the 10 straps and 6 door hooks with the way you want to attach roof luggage.
- Storage and handling: The included drawstring bag helps when the carrier is folded away, so check where you plan to keep it between uses.
- Weather protection: The product is described as waterproof, so confirm that level of protection matches how and where you plan to travel.
Compatibility, Size and Fit
This roof bag is described as working with all vehicles without racks, side rails, cross bars or a basket or tray on the top. That makes the mounting arrangement an important decision point before buying.
Check the roof layout on your vehicle and make sure the strap and hook setup suits the way the bag will be installed. The black and grey finish is part of the product variant, so confirm you are choosing the 21 cubic feet version if that is the size you need.
What Is Included
- Car roof bag
- Anti-slip mat
- Combination lock
- 10 reinforced straps
- 6 door hooks
- Drawstring storage bag
Before You Decide
Check that the 21 cubic feet / 574 L version is the size you want. Confirm that your vehicle can use the strap-and-hook fitting method and that you are happy with the included accessories. If you expect to use it in prolonged wet weather, store it indoors when not in use and make sure it is fully dry before fitting it again.
Using It in Practice
For a typical trip, the bag gives you a simple way to move luggage off the cabin floor and onto the roof. The stated capacity makes it easier to plan what goes inside, while the anti-slip mat and securing straps are there to support a more stable installation. Before setting off, check that the load is packed evenly and that the roof bag is fastened exactly as intended.
