---
product_id: 607643173
title: "COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black, 21 Cubic Ft/600L)"
brand: "costway"
price: "1083 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Costway"
url: https://www.desertcart.ro/products/607643173-costway-15-21-cubic-feet-car-roof-bag-100-waterproof
store_origin: RO
region: Romania
---

# 100% waterproof & tearproof 600L ultra-large capacity Secure combo lock & anti-slip mat COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black, 21 Cubic Ft/600L)

**Brand:** costway
**Price:** 1083 Lei
**Availability:** ✅ In Stock

## Summary

> 🚗 Elevate your road trip game with the ultimate waterproof rooftop cargo carrier!

## Quick Answers

- **What is this?** COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black, 21 Cubic Ft/600L) by costway
- **How much does it cost?** 1083 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/607643173-costway-15-21-cubic-feet-car-roof-bag-100-waterproof)

## Best For

- costway enthusiasts

## Why This Product

- Trusted costway brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Weatherproof Confidence:** Crafted with triple-layer PVC and reinforced seams to keep your gear dry and protected in any weather.
- • **Universal Fit, Zero Hassle:** Compatible with SUVs, sedans, trucks, and more—mounts easily with 6 door hooks and 14 straps, no roof rack needed.
- • **Quick Setup, Instant Freedom:** Simple installation in minutes—perfect for spontaneous road trips or planned family vacations.
- • **Travel Securely, Stress-Free:** Anti-slip mat and combination lock ensure your belongings stay put and safe on every journey.
- • **Maximize Your Adventure Space:** Spacious 21 cubic feet (600L) capacity fits all your camping and travel essentials effortlessly.

## Overview

The COSTWAY 21 Cubic Feet Car Roof Bag offers a massive 600L storage capacity with 100% waterproof, tearproof polyester and PVC construction. Designed for universal vehicle compatibility, it features 6 door hooks, 14 reinforced straps, an anti-slip mat, and a secure combination lock. Ideal for camping, family vacations, and road trips, this lightweight, foldable rooftop carrier ensures your gear stays dry, safe, and stable at speeds up to 90 mph.

## Description

COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black, 21 Cubic Ft/600L) : desertcart.co.uk: Automotive

Review: Definitely a good buy - Going to write a pretty long review as was very dubious about buying this roof bag and hope it helps someone else. When buying this roof bag, consider how many times you will be using it a year as using once/twice a year is fine but I personally don't think I would be happy using this lots. If you are practical then this roof bag should present no problems fitting and securing, if you're not then go to Halfords, buy and get them to fit roof bars and top box to your car. When packing, place your bedding, towels etc on the bottom covering the whole of the roof bag to protect your roof. Easy to secure with only having to use the 6 straps provided and stayed in place upto speeds of 90 mph (on the Autobahns) so no worries there at all. Didn't have to retighten straps as made sure it was fully loaded but may shift if not packed properly. When it comes to waterproof, we drove through two yellow warnings for rain and it was constant both there and back and absolutely no leaks at all, clothes, food, bedding and towels all dry. We were going to hire roof bars and top box but down to cost this beats it hands down. To sum up, cheaper than hiring a top box, no worries about storing a bulky top box in the garage as folds down very small and can be stored in a cupboard, definitely waterproof, good value for money. Would recommend
Review: Must buy for camping! - Brilliant roof bag, cannot recommend enough! We use this for camping and have used twice so far and it has been brilliant! Carries a lot and safe and secure. Comes with an anti slip mat too. We have a Golf R which has glued on door seals so we couldn’t hook the straps under the seals, so we had to improvise and purchased extra straps so they go all the way through the car. Works great. I would encourage anyone to buy this :)

## Features

- 【Large Storage Space】 Our Upgraded Waterproof Car Roof Bag offers a spacious solution for all your storage needs. It provides a 600L large storage capacity for your camping gear, including 2 double tents, 6 sleeping bags, 3 medium suitcases, and more. Therefore, it will be ideal for your family vacation, camping or road trip.
- 【100% Waterproof & Tearproof Design】 Made with a durable polyester fabric coated by high-quality PVC, our weather resistant roof bag is designed to withstand any weather. Moreover, the widened rain curtain (10 cm), 3-layer waterproof PVC material and reinforced 4-ply strap seams further enhance the bag’s snow-resistant, dust-resistant, UV-resistant, and rain-resistant ability.
- 【Wide Application For Cars】 No matter what type of vehicle you have, our cargo carrier is designed to fit with it. Whether you drive an SUV, jeep, sedan, pickup truck, or hatchback, or if your car is fitted with cross bar, side rail, basket or even without rack, this versatile roof bag can be easily mounted on it, thanks to the 6 door hooks and 14 reinforced straps.
- 【Anti-slip & Safe Design】 This rooftop cargo carrier comes with thoughtful anti-slip and anti-theft features. The bag is equipped with a non-slip mat and stripes to prevent the bag from sliding or shifting during your journey. Additionally, waterproof double zippers with lock holes and 4 digit luggage combination lock included to add safety to your belongings.
- 【Easy & Simple Assembly】 With just a few steps, you can easily assemble and install the upgraded waterproof car roof bag onto your car roof. For cars without car roof racks just peel back the door frame rubber, attach the grip hook onto the door frame, pull the looped strap upward and restore the rubber. As for cars with car roof racks, pull out the buckle and adjust the length, wrap the straps around the roof rack and slide the buckle to find the right fit.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CV7N1KQR |
| Best Sellers Rank | 11,297 in Automotive ( See Top 100 in Automotive ) 8 in Roof Boxes |
| Brand | COSTWAY |
| Brand Name | COSTWAY |
| Closure Type | Zipper |
| Colour | Black |
| Country Of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 317 Reviews |
| Included Components | 1 x Car Roof Bag, 1 x Instruction |
| Item Dimensions L x W x H | 130L x 100W x 43H centimetres |
| Item Volume | 600 Litres |
| Item height | 43 centimetres |
| Manufacturer | COSTWAY |
| Manufacturer Part Number | 3225GB35815 |
| Manufacturer Warranty Description | 1 |
| Material | Polyester , Polyvinyl Chloride (PVC) |
| Material Type | Polyester, Polyvinyl Chloride (PVC) |
| Mounting Type | Roof Mount |
| Mounting type | Roof Mount |
| Product dimensions | 130L x 100W x 43H centimetres |
| Shell Type | Soft |
| Water Resistance Level | Waterproof |
| Water resistance level | Waterproof |

## Product Details

- **Brand:** COSTWAY
- **Material:** Polyester, Polyvinyl Chloride (PVC)
- **Product dimensions:** 130L x 100W x 43H centimetres
- **Colour:** Black
- **Water resistance level:** Waterproof

## Images

![COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black, 21 Cubic Ft/600L) - Image 1](https://m.media-amazon.com/images/I/61RvfGIygxL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Definitely a good buy
*by A***R on 23 February 2024*

Going to write a pretty long review as was very dubious about buying this roof bag and hope it helps someone else. When buying this roof bag, consider how many times you will be using it a year as using once/twice a year is fine but I personally don't think I would be happy using this lots. If you are practical then this roof bag should present no problems fitting and securing, if you're not then go to Halfords, buy and get them to fit roof bars and top box to your car. When packing, place your bedding, towels etc on the bottom covering the whole of the roof bag to protect your roof. Easy to secure with only having to use the 6 straps provided and stayed in place upto speeds of 90 mph (on the Autobahns) so no worries there at all. Didn't have to retighten straps as made sure it was fully loaded but may shift if not packed properly. When it comes to waterproof, we drove through two yellow warnings for rain and it was constant both there and back and absolutely no leaks at all, clothes, food, bedding and towels all dry. We were going to hire roof bars and top box but down to cost this beats it hands down. To sum up, cheaper than hiring a top box, no worries about storing a bulky top box in the garage as folds down very small and can be stored in a cupboard, definitely waterproof, good value for money. Would recommend

### ⭐⭐⭐⭐⭐ Must buy for camping!
*by A***R on 13 August 2025*

Brilliant roof bag, cannot recommend enough! We use this for camping and have used twice so far and it has been brilliant! Carries a lot and safe and secure. Comes with an anti slip mat too. We have a Golf R which has glued on door seals so we couldn’t hook the straps under the seals, so we had to improvise and purchased extra straps so they go all the way through the car. Works great. I would encourage anyone to buy this :)

### ⭐⭐⭐⭐ Works well but you need to allow plenty of time to install and secure it.
*by S***R on 10 September 2025*

We just completed our first trip to Europe with this roof bag. Positives: * The bag construction seems strong and had space for a lot of our stuff. * It remained waterproof despite driving through very heavy rain for most of a day. * The 10 straps gives plenty of confidence that it will stay secure, even at motorway speeds. * The non-slip mat remained in place with no issues. * It remained solidly secured between my roof bars through-out the trip. I only had to stop once to secure a flapping strap end that had come loose. * I didn't find it added much noise over what my roof bars already add. Negatives: * The supplied lock was really flimsy and never worked, so I bought a key and padlock to secure the bag. * It takes longer than you would expect to fit the bag, fill it and secure it. By the end of the trip, I had it down to about 40mins to install and secure. * Tightening the straps takes effort and is fiddly. * Despite using rolled blankets inside the bag to give some shape to it, it certainly hurts the MPG, especially at motorway speeds.

## Frequently Bought Together

- COSTWAY 15/21 Cubic Feet Car Roof Bag, 100% Waterproof Roofing Cargo Carrier with Anti-Slip Mat, Combination Lock & Straps, Rooftop Luggage Storage Box (Black, 21 Cubic Ft/600L)
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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-07*