Foldable Capacity: 13.5L Large capacity bicycle bags rear rack can be unfolded with zippers to a bike pannier when you need more capacity

Needless Tool Installation: This bicycle rear seat bag come with 3 adjustable velcro straps, make it easy to be installed and unloaded in seconds, secure your Bag for maximum stability & security. This Bag does not move, shift or budge easily, helps you tie tight without getting caught in the wheel. Suitable for most bicycle racks, such as mountain bike, road bike, electric bikes

Multifunctional Bike Bag: You can use it as a shoulder bag or handbag depending on the occasion. When off the road, you can use it at work or school. This bike luggage bag comes with a handle and adjustable shoulder strap, rack pannier bag is not only used for bicycle cycling but also can be used as a handbag, mountain climbing bag and shoulder bag for travel, camping, picnic, ski and more occasions
13.5L Large Capacity Rear Bike Bag: Unzip the sides to expand the bag from 8L to 13.5L. Dimension of 14 x 6 x 9.8inch (L x W x H), large enough to store wallet, phones, towels, clothes, bike tools, water bottles, maps, food, etc. This bag for rear bike rack includes a main compartment, 2 side pocket, a top mesh pouch and 1 inner mesh pocket, help to get your essentials well organized
Water Resistant Bike Rear Rack Bag: The bicycle rack bag is made of PU leather & polyester, which is water repellent and easy to clean. Completely protects the contents of your bike rack bag from dust, sand, water, rain and snow. Solid shapes make it not deform and look stylish. NOTE: Waterproof zip design will be tighter than normal zip
Also A Chest Bag: Not only can be used as bike bag, but also rear bike bag is a stylish commuter chest bag when taking out the hidden shoulder strap from the bottom pocket and get it hooked in other end loop. Moreover, rear bike rack bag come with a comfortable handle to make it a handbag. Easy to take it away anytime when finish your riding
Portable Design: The rear bicycle bag comes with a top hand strap and adjustable shoulder straps, making rear bike rack bag easy to carry when not riding. The multifunctional bicycle bag is designed to be fashionable and simple, aligning with current trends
Safe Night Riding: The reflective strip on the rear bike rack bag helps ensure safe riding at night, and the strap on bike trunk can hold a tail light for enhanced visibility and protection