---
product_id: 48023563
title: "Sailnovo 20 Cubic Feet/580L Car Roof Bag, Waterproof Car Roof Storage Box | Heavy Duty Roof Boxes for Cars with Roof Bars or No Rack | With Reinforced Straps, Door Hooks & Storage Bag | Black"
brand: "sailnovo"
price: "$261.00"
currency: USD
in_stock: true
reviews_count: 13
category: "Sailnovo"
url: https://www.desertcart.us/products/48023563-sailnovo-20-cubic-feet-580l-car-roof-bag-waterproof-car
store_origin: US
region: United States of America
---

# 1000D waterproof inner layer 20 cu ft / 580L capacity 8 reinforced straps with heavy-duty buckles Sailnovo 20 Cubic Feet/580L Car Roof Bag, Waterproof Car Roof Storage Box | Heavy Duty Roof Boxes for Cars with Roof Bars or No Rack | With Reinforced Straps, Door Hooks & Storage Bag | Black

**Brand:** sailnovo
**Price:** $261.00
**Availability:** ✅ In Stock

## Summary

> 🚗 Elevate your road trips with the ultimate rooftop cargo upgrade!

## Quick Answers

- **What is this?** Sailnovo 20 Cubic Feet/580L Car Roof Bag, Waterproof Car Roof Storage Box | Heavy Duty Roof Boxes for Cars with Roof Bars or No Rack | With Reinforced Straps, Door Hooks & Storage Bag | Black by sailnovo
- **How much does it cost?** $261.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/48023563-sailnovo-20-cubic-feet-580l-car-roof-bag-waterproof-car)

## Best For

- sailnovo enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Easy Setup:** Folds down small for storage and installs quickly with 8 heavy-duty straps—save space and time on every trip.
- • **Weatherproof Confidence:** Waterproof PVC lining, rain curtain, and sealed zippers keep your gear dry even in heavy rain—travel worry-free.
- • **Massive 20 Cubic Feet Storage:** Fits all your travel essentials with room to spare—perfect for family trips or big moves.
- • **Universal Fit, No Roof Bars Needed:** Adjustable reinforced straps secure the bag on almost any vehicle, bar or no bar—travel ready in minutes.
- • **Triple-Layer 1000D Tear-Resistant Fabric:** Twice as strong as competitors, built to withstand rough roads and heavy loads without ripping.

## Overview

The Sailnovo 20 Cubic Feet Car Roof Bag offers a massive 580L capacity in a flexible, soft-shell design that fits most vehicles with or without roof bars. Crafted from triple-layer 1000D tear-resistant and waterproof fabric, it protects your belongings from harsh weather while its aerodynamic shape reduces noise and fuel consumption. Equipped with 8 reinforced straps and door hooks, it installs securely and folds compactly for easy storage—ideal for millennials who demand style, durability, and convenience on every adventure.

## Description

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The video guides you through product setup. The video compares multiple products. The video shows the product being unpacked. (window.desertcartUIPageJS ? desertcartUIPageJS : P).load.js('https://m.media-desertcart.com/images/I/61rq0L4t2wL.js?AUIClients/VSEPlayer'); (window.desertcartUIPageJS ? desertcartUIPageJS : P).load.js('https://m.media-desertcart.com/images/I/3175HHgX+OL._RC|01x4giTy+uL.js,01r9LpT6pbL.js,41NWBkfooBL.js,11QfrzttlqL.js,91VXiFQ1TCL.js,01ELLYeIOkL.js_.js?AUIClients/Brila'); (function(f) {var _np=(window.P._namespace("vse-ns-initVSEPlayerOnLoad"));if(_np.guardFatal){_np.guardFatal(f)(_np);}else{f(_np);}}(function(P) { P.when('VSEPlayer').execute(function(vsePlayer){vsePlayer.initPlayer('aplus-8098-player-ps');}); //Please use below event to register FeedbackForm P.when('A', 'VSEComponentAssets').execute('vse-ns-player-initialization', function(A, asset) { A.trigger('vse:ns:player:aplus-8098:init', 'aplus-8098-player-ps'); }); })); More Capacity, More Pleasure! EXTRA LARGE SIZE-20 Cubic Sailnovo rooftop cargo carrier, 51" (L) X 39" (W) X 17" (H), with 20 cubic feet of space can easily hold all luggage of a family of 5-6. You don't have to spend as much as you would for a roof box, but you have a bag that has all the features of a car roof box! Secure and Durable LONG USAGE TIME Made of 900D Oxford fabric, wear-resistant and breathable. The bottom and interior are made of 1000D PVC waterproof fabric, ensuring your belongings stay dry even in extreme weather conditions. Most Security, No More Rips! UPGRADED & REINFORCED STRAP SEAM Features 3- layers of 1000D PVC tear-proof material, Sailnovo rooftop cargo carrier bag is twice as strong as other brands' 500D fabrics. For a better experience, do not place sharp objects in the roof cargo bag, as this can easily cause the cargo bag to tear while driving. How to Install the Door Hooks? Different Car Roof Bag to Meet Your Different Needs on the Road Trip 2024 ROOF BAG 20 cubic 2024 ROOF BOX 20 cubic 2024 NEW Version 20 cubic 2024 ROOF BAG 15 cubic 2024 NEW Version 15 cubic Waterproof Car Roof Carrier

Review: The best backpack a car could have. - What can I say that hasn’t already been said! Having used this product on my barless car, I cannot recommend it enough for the following: - Ease of use: it really is as simple as place it on the roof and strap it up (either to your bars or through the car doors). Simple tightening, but very secure. - Super sturdy: This carrier simply won’t let you down. It is thick and tightens to fit the load so no room for items to slip around. - Weatherproof: whilst I was unable to test the waterproof functionality, the layer inside is thick. I can see the straps absorbing rain and potentially causing problems inside the vehicle however I would be VERY surprised should the main carrier let water through. - Super portable: the carrier folds back up into its bag with ease. Cannot ask for better storage! If you’re due to go on holiday or need to carry a little more than your boot can handle, this product is second to none. Very very impressed and wish I’d have invested sooner!
Review: Well made however you may want to place a thin rubber sheet between this and the car roof. - Really good quality and easy to fit to the car, straps come into the car and tightened from inside. Just be careful of the placement as they may touch your head while driving. This allowed us to downsize from and Audi S5 to BMW M1 and we now have more storage space for camping. We purchased this as a friend also had the same model. Not that you will need to supply a this non slip rubber mat and place this on your car roof before the Carrier bag is placed on the car roof. It will help to stop the bag moving around and avoid any potential scratches on the roof. I very much doubt that this would happen however and al in all this is a well made product.

## Features

- 【LARGE CAPACITY】This 51''x39''x17'' roof bag packs 20 cubic feet (580 liters) of space to give you ample storage room. Unlike hard roof box that struggle to fit odd-shaped items, ours has soft sides that flex to accommodate them - great helper of long travel and moves.
- 【UNIVERSAL FIT】The roof boxes for cars with roof bars can be used with most types of vehicles, even vehicles without roof bars. We offer adjustable reinforced straps for a quick and secure setup. (NOTE: Not suitable for sliding door vehicles)
- 【WATERPROOF】Equipped with 1000D waterproof inner layer, Sailnovo car roof bag ensures your belongings get better protection from severe weather. The extended rain curtain and waterproof zip effectively prevent water leakage, allowing you to travel confidently on rainy days. (In heavy rain, put your clothes in extra dry bags in case of leakage.)
- 【MORE SAFETY】Our roof box storage constructed from soft-shell fabric materials that have triple-layer high-density 1000D, which is 2 times stronger than 500D fabric. To prevent tearing at the strap seams, we double-reinforced the strap seams.
- 【EASY TO INSTALL & STORE】We’ve included 8 reinforced straps with heavy-duty buckles to easily and securely install the car box. No dealing with bulky roof rack bags, ours compactly folds down in the storage bag, saving your sapce and gas.
- 【BUILT TO LAST】- The scientifically designed arch shape of the vehicle roof box bags enhances aerodynamics, reducing noise, fuel consumption, and wind damage risk. A rooftop cargo carrier made for long and enjoyable trips!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B074QBQSVN |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | 21,477 in Automotive ( See Top 100 in Automotive ) 25 in Roof Boxes |
| Brand | Sailnovo |
| Brand Name | Sailnovo |
| Closure Type | Zipper |
| Colour | Black |
| Country Of Origin | China |
| Customer Reviews | 4.3 out of 5 stars 4,179 Reviews |
| Folded size | 38 * 25 * 12 cm |
| Included Components | Car Roof Bag |
| Item Dimensions L x W x H | 129.5L x 99.1W x 43.2H centimetres |
| Item Type Name | AMD005033_M_NEW@@ |
| Item Volume | 580 Litres |
| Item Weight | 3.7 Kilograms |
| Item weight | 3.7 Kilograms |
| Manufacturer | Sailnovo |
| Manufacturer Part Number | B074QBQSVN |
| Manufacturer Warranty Description | 1 year |
| Material | Polyester |
| Material Type | Polyester |
| Model Number | Sailnovo5033-FR |
| Mounting Type | Strap mount |
| Product dimensions | 129.5L x 99.1W x 43.2H centimetres |
| Shell Type | Soft |
| UPC | 710120255173 741513018778 670731479880 194349001009 |
| Unit Count | 1.0 count |
| Water Resistance Level | Waterproof |
| Water resistance level | Waterproof |

## Product Details

- **Brand:** Sailnovo
- **Colour:** 580L 1000D Waterproof Roof Bags
- **Item weight:** 3.7 Kilograms
- **Material:** Polyester
- **Product dimensions:** 129.5L x 99.1W x 43.2H centimetres

## Images

![Sailnovo 20 Cubic Feet/580L Car Roof Bag, Waterproof Car Roof Storage Box | Heavy Duty Roof Boxes for Cars with Roof Bars or No Rack | With Reinforced Straps, Door Hooks & Storage Bag | Black - Image 1](https://m.media-amazon.com/images/I/61R98dReXLL.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ The best backpack a car could have.
*by P***M on 14 June 2023*

What can I say that hasn’t already been said! Having used this product on my barless car, I cannot recommend it enough for the following: - Ease of use: it really is as simple as place it on the roof and strap it up (either to your bars or through the car doors). Simple tightening, but very secure. - Super sturdy: This carrier simply won’t let you down. It is thick and tightens to fit the load so no room for items to slip around. - Weatherproof: whilst I was unable to test the waterproof functionality, the layer inside is thick. I can see the straps absorbing rain and potentially causing problems inside the vehicle however I would be VERY surprised should the main carrier let water through. - Super portable: the carrier folds back up into its bag with ease. Cannot ask for better storage! If you’re due to go on holiday or need to carry a little more than your boot can handle, this product is second to none. Very very impressed and wish I’d have invested sooner!

### ⭐⭐⭐⭐⭐ Well made however you may want to place a thin rubber sheet between this and the car roof.
*by D***Y on 20 October 2025*

Really good quality and easy to fit to the car, straps come into the car and tightened from inside. Just be careful of the placement as they may touch your head while driving. This allowed us to downsize from and Audi S5 to BMW M1 and we now have more storage space for camping. We purchased this as a friend also had the same model. Not that you will need to supply a this non slip rubber mat and place this on your car roof before the Carrier bag is placed on the car roof. It will help to stop the bag moving around and avoid any potential scratches on the roof. I very much doubt that this would happen however and al in all this is a well made product.

### ⭐⭐⭐⭐ Very happy with the bag
*by A***R on 13 April 2022*

It fit one large suitcase and three smaller overhead baggage travel cases, and 2 shopping bags of clothes, which was enough for our trip, didnt notice any rain or wetness on the inside and we travelled 4 hours during a storm, so i guess its fairly waterproof, the straps on the 4 corners are strong and tighten easily, so there was no movement during the journey, the only negative was the fabric lip that covers the zip has velcro patches to keep the zip covered but they are too far apart so the lip folds up exposing the zip, overall very happy with it, comes in a neat bag for storage as well, if you were using it everyday im not sure it would be very siitable as it would probably wear fast, but for 3 or 4 trups a year its perfect

## Frequently Bought Together

- Sailnovo Car Rooftop Cargo Carrier Roof Bag, 20 Cubic feet Waterproof Roof Cargo Carrier fit car Without Luggage Rack - Vehicle Soft Shell Roof Cargo Box with Tie-Down Strap
- RACOONA Roof Rack Pads, 51"x43" Roof Cargo Bag Protective Mat, Black, Soft Shell, Universal Fit, Not Water Resistant
- ROOF CARGO BAG PROTECTIVE MAT for Car Roof Storage Bags with EXTRA PADDING and GRIP Place the car roof mat under any rooftop cargo bag TOP UNIVERSAL ROOF RACK PAD for PROTECTION from Car Roof Racks

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-23*