Large Capacity Bike Trunk Bag for Bicycles

A Simple Look At Features

Max 45L Large Capacity: The ROCKRBOS trunk bag boasts a spacious and cushioned interior, perfect for carrying a variety of items such as bike tools, shoes, and extra clothing. Adjustable dividers make it easy to carry large cameras, and you can expand the capacity from 16L to 45L as needed.

Versatile & Portable: These expandable double-sided bike panniers are hidden by zippers, providing an easy storage solution. Unzip the expansion to fit more clothes and shoes. You can also carry the ROCKRBOS bike bag by shoulder or hand straps for convenience.

Sturdy Construction & Durable: The bag is well-made and compact, made from strong material with great stitching and smoothly functioning zippers. It can hold plenty for daily commuting, a day trip, or shopping at the store.

Easy To Install & Stay In Place: The solid straps ensure a secure fit on your bike rack, whether you go straight across or crisscross. Suitable for various types of bikes, including mountain bikes, road bikes, leisure bikes, and e-bikes.

Compatible with Taillights & Water Bottle Holder: The rear bike rack bag has a spot for attaching a tail light and features high-visibility stripes for improved safety at night. An outside water bottle pocket with a cord to tighten helps keep things secure on rough roads. The bag comes with a bright and reflective rain cover to fit over your whole bike bag.