RZAHUAHU Waterproof Bike Rear Rack Bag 20L Bike Side Storage Bag Laptop Pannier Bag Bicycle Trunk Rear Seat Carrier Pack Shoulder Bag

features roll-top closure, 20L large capacity, reflective elements, a quick-release mounting system, great pannier for bike riding.
Features:
Polyester and PVC material with welded seams protects your valuables from water and dust, durable and easy to clean.
The roll-up design prevents water or rain from entering the bag, keeping your belongings dry.
20L large capacity provides enough storage space for your cycling essentials; built-in compartment designed for your laptop.
Reflective elements for added visibility and safety when riding at night.
Mounting hooks for easy installation and quick release; can also be used as a shoulder bag.