---
product_id: 301088347
title: "Bike Trunk Bag - Rear Carrier Bag with Rain Cover for Commuter Bikes"
brand: "rockbros"
price: "85039CFA"
currency: XOF
in_stock: true
url: https://www.desertcart.sn/products/301088347-bike-trunk-bag-rear-carrier-bag-with-rain-cover-commuter
store_origin: SN
region: Senegal
---

# 13L expandable capacity Waterproof rain cover included Secure multi-strap attachment Bike Trunk Bag - Rear Carrier Bag with Rain Cover for Commuter Bikes

**Brand:** rockbros
**Price:** 85039CFA
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Elevate your commute with the ultimate bike trunk bag—organized, secure, and ready for any ride!

## Quick Answers

- **What is this?** Bike Trunk Bag - Rear Carrier Bag with Rain Cover for Commuter Bikes by rockbros
- **How much does it cost?** 85039CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/301088347-bike-trunk-bag-rear-carrier-bag-with-rain-cover-commuter)

## Best For

- rockbros enthusiasts

## Why This Product

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

## Key Features

- • **Ride Rain or Shine:** Includes a durable rain cover and water bottle holder with adjustable drawstring—stay dry and hydrated on every commute.
- • **Organize Like a Pro:** Multiple compartments + fold-out side pockets for 13L max capacity—carry everything you need without the clutter.
- • **Rock-Solid Stability:** Thick foam padding maintains shape and protects your gear—no sagging or shifting, even on bumpy rides.
- • **Safety First, Always:** Reflective straps and taillight compatibility boost your visibility for safer night rides—because your commute deserves peace of mind.
- • **Universal Fit & Lockdown:** Secure attachment with 2 Velcro straps, 2 long cross straps, and buckles—fits all bike racks including fat bikes and e-bikes without slipping.

## Overview

The ROCKBROS Bike Trunk Bag offers a versatile 13L capacity with expandable side pockets, thick foam padding for protection, and a waterproof rain cover. Designed for commuters and day riders, it features reflective straps and taillight compatibility for enhanced safety, plus a secure multi-strap system that fits all bike racks including fat and e-bikes. Lightweight at 721g, this bag combines practicality with durability for a seamless cycling experience.

## Description

Bike Trunk Bag - Rear Carrier Bag with Rain Cover for Commuter Bikes

## Features

- MULTIPLE COMPARTMENTS & EXTENSIBLE DOUBLE SIDE POCKETS: 13L Maximum capacity bike trunk bag main compartment with a removable board, and some inside pockets to help with a bit of organization for small things. Fold-out pockets on each side for expanded capacity to hold a lot of side items and incidentals. For a day ride or daily commute, this is a good choice
- STABLE CONSTRUCTION & PROTECTION: Thicken foam pad fills the inside bottom and sides of the trunk bag for holding its shape and protecting your items. It will not collapse to one side or the other even if nothing is in it
- PORTABLE: Package with the rain cover and the carry strap. You will want to take this trunk bag with you if you go on a stroll and don't need to worry about it being stolen. The water bottle holder with adjustable drawstring design are helpful for avoiding the water bottle fall out on a bumpy ride
- REFLECTIVE STRAPS & COMPATIBLE WITH TAILLIGHT FOR SAFETY: Reflective straps on the bike luggage bag provides good visibility, the strap at the back for attaching rear light. You'll want to add some reflective items to ensure your safety if you're a night rider
- EASY TO ATTACH & STAYS IN PLACE: 2 Velcro straps on the front of the rack, the 2 long straps going across the rack as well as 2 fixed buckle, it's fastened securely to the rack and doesn't shift. Bike rack bag fits for any racks, such as fat bikes, e-bikes and other commuter bikes

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | ROCK BROS |
| Brand | ROCKBROS |
| Product Dimensions | 35.31 x 16.76 x 16.26 cm; 721 g |
| Item model number | A9-BK |
| Manufacturer Part Number | A9-BK |
| Item Weight | 721 g |

## Product Details

- **Colour:** black
- **Size:** small
- **Brand:** ROCKBROS
- **Material:** Polyester
- **Vehicle service type:** Bicycle

## Images

![Bike Trunk Bag - Rear Carrier Bag with Rain Cover for Commuter Bikes - Image 1](https://m.media-amazon.com/images/I/71LMuwVgDBL.jpg)

## Questions & Answers

**Q: Does this come with the rack to hold the back?  Or is the rack a separate purchase?**
A: The rack is a separate purchase.

**Q: Does the rack come separately from bag and how do i get to look at those?**
A: The rack is separate from the trunk bag ... you will need to look up racks compatible with your type of bike ...

**Q: Main compartment internal dimensions please?**
A: 13"  L  x 6" W x  5" H

**Q: Can this rack work on a carbon seatpost?**
A: Absolutely!! As long as you install cargo rack. So much room for a lot of stuff. You cant go wrong .enjoy your new bag.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.sn/products/301088347-bike-trunk-bag-rear-carrier-bag-with-rain-cover-commuter](https://www.desertcart.sn/products/301088347-bike-trunk-bag-rear-carrier-bag-with-rain-cover-commuter)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-01-28*