Large Capacity Waterproof Bike Rear Rack Bag

Maximize your carrying capacity without bulk using this versatile foldable bicycle rear rack bag. Designed for the modern commuter and long-distance cyclist, this bag functions as both a streamlined trunk bag and an expandable rear basket. When not in use, it folds flat against your bike rack, reducing wind resistance and maintaining a sleek profile. When you need to haul groceries, camping gear, or gym clothes, simply unzip and unfold it to reveal a massive storage compartment.

Crafted from heavy-duty, waterproof fabric, it ensures your belongings stay dry and protected from rain, mud, and road splash. The bag attaches securely to any standard bicycle rear rack using a robust system of straps or hooks, preventing wobble during rides. Its open-top “basket” style design allows for easy loading of taller items, while the optional drawstring or zipper cover keeps contents secure. Whether you are running errands around town or embarking on a touring adventure, this multi-functional pannier adapts to your load instantly.