---
product_id: 205306630
title: "Bike Frame Bag Waterproof Bike Triangle Frame Bag Reflective Top Tube Bag Large Capacity Black Bike Accessories for MTB, Road Bike"
brand: "rockbros"
price: "€ 125.15"
currency: EUR
in_stock: true
reviews_count: 13
category: "Rockbros"
url: https://www.desertcart.sk/products/205306630-bike-frame-bag-waterproof-bike-triangle-frame-bag-reflective-top
store_origin: SK
region: Slovakia
---

# Water-resistant nylon & airtight zipper TPU frame for stability & durability 4L large capacity Bike Frame Bag Waterproof Bike Triangle Frame Bag Reflective Top Tube Bag Large Capacity Black Bike Accessories for MTB, Road Bike

**Brand:** rockbros
**Price:** € 125.15
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ Gear Up, Stand Out, Ride On – The Ultimate Frame Bag for the Modern Cyclist

## Quick Answers

- **What is this?** Bike Frame Bag Waterproof Bike Triangle Frame Bag Reflective Top Tube Bag Large Capacity Black Bike Accessories for MTB, Road Bike by rockbros
- **How much does it cost?** € 125.15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/205306630-bike-frame-bag-waterproof-bike-triangle-frame-bag-reflective-top)

## 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

- • **Carry More, Ride Free:** Generous 4L capacity fits all essentials from phone to energy gels without bulk.
- • **Sleek & Silent Design:** Slim, asymmetrical shape prevents knee rub and eliminates annoying rattles on long rides.
- • **Reflective Safety Boost:** Top tube reflective accents enhance visibility for safer night and low-light cycling.
- • **Weatherproof Confidence:** Upgraded waterproof nylon and airtight zippers keep your gear dry in light to moderate rain.
- • **Effortless Fit & Stability:** Hook & Loop fasteners allow quick installation and a secure, wobble-free ride.

## Overview

The ROCKBROS Bike Frame Bag is a premium 4L waterproof triangle bag crafted from high-density nylon with a TPU frame for enhanced durability and stability. Designed for MTB and road bikes, it features airtight zippers, reflective top tube accents, and a slim, asymmetrical profile that prevents knee interference and noise. Easy to install with adjustable Hook & Loop straps, it offers ample storage for all your cycling essentials while keeping them protected from the elements.

## Description

ROCKBROS Bike Frame Bag Waterproof Bicycle Triangle Frame Pack Reflective Top Tube Pouch Large Capacity Bicycle Accessories for MTB Road Bike Black 4L : desertcart.co.uk: Sports & Outdoors

Review: Really good - Good bit of kit this. Can hold a surprising amount of stuff (shackle lock, sandwich, flask, jacket, keys and wallet comfortably), doesn’t move about once attached. Easy to install. One side gives you access to the bulk of the bag, the other side is a slip pocket for keys, wallet etc. Haven’t had it out in the rain but you can tell it’ll hold up well in even the most determined downpours. You’d probably get away with submerging it if you had to! Put it on and forget about it.
Review: Really nice and thin - If you are worried about rubbing your knees against a bag, that one is for you, it's so slim it practically hides under the top tube of my bike. Still manages to hold a phone, a battery pack, a few energy bars, usb cables and a few bike-related items. Really nice. It's also asymmetrical at the ends so you can find the best fit for your bike geometry. And one really important thing for me - it doesn't make a sound. You might not find it important, but when I had to listen my under-saddle bag squeaking for 10 hours last weekend, it was really annoying. Rockbros didn't make a sound, all I needed was to take care of the content - make sure nothing tumbles around - and it was a blast.

## Features

- 🏃NOTE: This bag is larger than normal frame bags. LARGE CAPACITY: 4L capacity, the bicycle storage bag has a super large capacity that means it stores all of your pieces, phone, keys, water bottle, mini bump, energy gels, etc.
- 🏃WATER RESISTANT: the upgraded nylon material and airtight zipper are totally waterproof, preventing rain or water from getting into the bag.（No use long in heavy rain)
- 🏃EASY TO INSTALL: to fix the bike frame bag to your bike, you just fasten these Hook & Loop. And adjust the bike bag by changing the position and quantity to fit the bike.
- 🏃STABLE & STURDY: Frame made of high quality TPU, the bike pouch is more stable and wear resistant. No worry about deforming.
- 🏃HUMANIZED DESIGN: Slim and simple, ROCKBROS bike frame bag looks pretty cool with your bike. Your legs will not touch the bag during cycling.NOTE: Water resistant zippers might be a little hard to move at first.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B088FKB4QY |
| Batteries included? | No |
| Best Sellers Rank | 15,541 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 19 in Bike Frame Bags |
| Brand | ROCKBROS |
| Color | 4 L |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,388) |
| Date First Available | 11 May 2020 |
| Handle type | Web Handle |
| Item model number | AS-018/DE |
| Manufacturer | ROCKBROS |
| Material type | High Density Nylon |
| Product Dimensions | 44.5 x 6 x 16 cm; 260 g |
| Size | L |
| Style | minimalist |

## Product Details

- **Brand:** ROCKBROS
- **Colour:** 4 L
- **Material:** High Density Nylon
- **Size:** L
- **Vehicle service type:** Bicycle

## Images

![Bike Frame Bag Waterproof Bike Triangle Frame Bag Reflective Top Tube Bag Large Capacity Black Bike Accessories for MTB, Road Bike - Image 1](https://m.media-amazon.com/images/I/71siotPhDkL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Really good
*by R***5 on 5 May 2025*

Good bit of kit this. Can hold a surprising amount of stuff (shackle lock, sandwich, flask, jacket, keys and wallet comfortably), doesn’t move about once attached. Easy to install. One side gives you access to the bulk of the bag, the other side is a slip pocket for keys, wallet etc. Haven’t had it out in the rain but you can tell it’ll hold up well in even the most determined downpours. You’d probably get away with submerging it if you had to! Put it on and forget about it.

### ⭐⭐⭐⭐⭐ Really nice and thin
*by D***K on 19 June 2022*

If you are worried about rubbing your knees against a bag, that one is for you, it's so slim it practically hides under the top tube of my bike. Still manages to hold a phone, a battery pack, a few energy bars, usb cables and a few bike-related items. Really nice. It's also asymmetrical at the ends so you can find the best fit for your bike geometry. And one really important thing for me - it doesn't make a sound. You might not find it important, but when I had to listen my under-saddle bag squeaking for 10 hours last weekend, it was really annoying. Rockbros didn't make a sound, all I needed was to take care of the content - make sure nothing tumbles around - and it was a blast.

### ⭐⭐⭐⭐ Saves handle bar space
*by S***Y on 30 June 2024*

Good product. I bought this to put tools in on 4 days cycling. Fits tubes, pump, multi tool, Allen keys, levers, bike lock, and space for more - easy to attach and take off nice appearance

## Frequently Bought Together

- ROCKBROS Bike Frame Bag Waterproof Bike Triangle Frame Bag Reflective Top Tube Bag Large Capacity Black Bike Accessories for MTB, Road Bike
- Science In Sport SIS Clear Sports Water Bottle, Plastic Water Bottle, Black Logo, Transparent Colour, 800 ml
- ROCKBROS Bicycle Frame Bag Waterproof Bicycle Triangle Bag Front Frame Top Tube Bag Cycle Pouch Bag Cycling Pouch Pack Bike Triangle Pannier 1.6 L/1L

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**Shop now:** [https://www.desertcart.sk/products/205306630-bike-frame-bag-waterproof-bike-triangle-frame-bag-reflective-top](https://www.desertcart.sk/products/205306630-bike-frame-bag-waterproof-bike-triangle-frame-bag-reflective-top)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-22*