---
product_id: 64487978
title: "ROCKBROS Top Tube Bike 840D Nylon Waterproof Bag Bicycle Front Frame Bag"
brand: "rockbros"
price: "¥8960"
currency: JPY
in_stock: true
category: "Rockbros"
url: https://www.desertcart.jp/products/64487978-rockbros-top-tube-bike-840d-nylon-waterproof-bag-bicycle-front
store_origin: JP
region: Japan
---

# 1.6L high-capacity storage 3-layer waterproof tech 840D nylon abrasion-proof shell ROCKBROS Top Tube Bike 840D Nylon Waterproof Bag Bicycle Front Frame Bag

**Brand:** rockbros
**Price:** ¥8960
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Gear up, stay dry, and ride with confidence!

## Quick Answers

- **What is this?** ROCKBROS Top Tube Bike 840D Nylon Waterproof Bag Bicycle Front Frame Bag by rockbros
- **How much does it cost?** ¥8960 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/64487978-rockbros-top-tube-bike-840d-nylon-waterproof-bag-bicycle-front)

## 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

- • **Ergonomic Comfort Fit:** Slim profile prevents leg rub, ensuring smooth, distraction-free rides.
- • **Rock-Solid Durability:** Fiberboard supports maintain shape and resist deformation on any terrain.
- • **Tool-Free Quick Mount:** 3 magic straps enable fast, secure installation and removal—no tools needed.
- • **Spacious Yet Sleek Design:** 1.6L capacity fits phone, wallet, tools without bulk—ride light, ride smart.
- • **Ride-Ready Waterproof Protection:** Triple-layer 840D nylon + TPU + sealed zipper keeps your essentials bone dry, rain or shine.

## Overview

The ROCKBROS Top Tube Bike Bag combines a durable 840D nylon shell with a triple-layer waterproof system and fiberboard supports to offer 1.6L of secure, weatherproof storage. Designed for easy tool-free mounting and a slim, ergonomic fit, it keeps your essentials safe and accessible without compromising ride comfort.

## Description

desertcart.com: ROCKBROS Top Tube Bike 840D Nylon Waterproof Bag Bicycle Front Frame Bag | Phone Accessories Pouch with Fiberboard Supports for MTB Road City Bike Compatible with Phone Under 6.8” (New Straps) : Sports & Outdoors

## Features

- HIGH CAPACITY: 1.6L/1L capacity and extended design-size are big enough to store your wallet, energy gel, mobile phone, gloves, repair bike tool, power bank and so on
- EXTRAWATERPROOF: Three-layer waterproof material: 840D Nylon + Internal PP board +TPU material and sealed adhesive zipper, which ensure the water will not flow into the bag
- DURABLE & STEADY: The main material 840D nylon can be highly abrasion proof and durable. The sidewalls of the bag have fiberboard supports, so it is not easily deformed
- COMFORTABLE & CONVENIENT: The front bike bag has a long slim body. Proper space design makes you ride more smoothly and comfortable (It would not rubs against your legs while riding). And it's portable, you can take this bike pouch easily while leaving away from your bike
- EASY TO INSTALL: 3 magic straps make the bag firmer on the bike frame, and is designed for quick installation and release without any other tools. Note: You can cut the backstrap yourself. Before installation, check the diameter of the top tube and check the frame for screws or fasteners

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BMPF9HS |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #47,897 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #25 in Bike Pack Accessories |
| Brand Name | ROCKBROS |
| Capacity | 1.6 liters |
| Closure Type | Zipper |
| Color | Black |
| Compatible with Vehicle Type | Bicycle |
| Customer Reviews | 4.3 4.3 out of 5 stars (2,439) |
| Handle Type | Web Handle |
| Item Dimensions L x W x H | 9.25"L x 2.55"W x 4.13"H |
| Item Highlight | Phone Accessories Pouch with Fiberboard Supports for MTB Road City Bike Compatible with Phone Under 6.8” (New Straps) |
| Item Weight | 4.16 ounces |
| Manufacturer | ROCKBROS |
| Manufacturer Part Number | AS-019-1 |
| Material Type | 840D Nylon, TPU |
| Model Number | AS-019-1 |
| Mounting Type | Frame Mount |
| Number of Compartments | 1 |
| Number of Items | 1 |
| Pattern | Solid |
| Shell Type | Hard |
| Size | 1.6L |
| Strap Type | Removable |
| Style Name | Minimalist |
| UPC | 658126868389 |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** ROCKBROS
- **Color:** Black
- **Material:** 840D Nylon, TPU
- **Size:** 1.6L
- **Vehicle Service Type:** Bicycle

## Images

![ROCKBROS Top Tube Bike 840D Nylon Waterproof Bag Bicycle Front Frame Bag - Image 1](https://m.media-amazon.com/images/I/81ONdihoPdL.jpg)

## Available Options

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

## Frequently Bought Together

- ROCKBROS Bike Top Tube Bag Bicycle Front Frame Bag Waterproof Bike Pouch Pack Bike Phone Bag Cycling Accessories Pouch for Mountain Road Bike Large
- Ascher Ultra Bright USB Rechargeable Bike Light Set, Powerful Bicycle Front Headlight and Back Taillight, 4 Light Modes, Easy to Install for Men Women Kids Road Mountain Cycling Black
- ROCKBROS Bike Seat Bag, Bicycle Saddle Bag Under Seat 3D Shell Cycling Seat Pack for Mountain Road Bikes Black

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**Shop now:** [https://www.desertcart.jp/products/64487978-rockbros-top-tube-bike-840d-nylon-waterproof-bag-bicycle-front](https://www.desertcart.jp/products/64487978-rockbros-top-tube-bike-840d-nylon-waterproof-bag-bicycle-front)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-11-07*