








Expandable Storage for City Rides Short Trips
Designed for folding bikes, this multifunctional bag combines adjustable capacity, waterproof protection, and portable convenience. Whether you're commuting to work or heading out on a short adventure, it's ready to adapt to your needs — and your style.
Key Features:
Adjustable Capacity: Expands from 4L to 9L with a simple clasp adjustment for flexible packing
Easy Installation: Mounts in minutes with provided tools; stays attached even when folding the bike
Waterproof & Leakproof: Durable outer shell and leak-resistant lining protect against rain and spills
Short-Term Insulation: Aluminum foil lining helps preserve food temperature for short trips
Dual Use Design: Doubles as a stylish crossbody bag with hidden mount compartment
Smart Storage Layout: Separate compartments keep items organized and easily accessible
Hidden Mount Design: Zip up the mounting base for a clean, everyday look when worn off the bike
Shipping Fees:
We provide clear and detailed shipping fees based on the order amount and shipping method:
- Standard Shipping:
- Order Amount Below $29: Shipping Fee - $4.99
- Delivery Time: 3-4 business days
- Free Shipping:
- Order Amount $29 and over: Free Shipping
- Delivery Time: 3-4 business days
Please note that we do not charge any additional taxes.
Enjoy worry-free shopping with our 30-day return policy. We cover return shipping for any defective or incorrect products
At ROCKBROS, we offer a worry-free 1-year warranty to ensure your satisfaction. Whether it's a defect or product issue, simply reach out to us at service@rockbrosbike.us with your order details. We'll handle the rest to make sure your experience is smooth and hassle-free.











