Feature:1. WATERPROOF: The bike rear rack bag is made of waterproof PU leather material and waterproof zipper, practical and durable, especially for cycling.2. LARGE CAPACITY: Bike rear rack carrier bag with top zipper pocket and adjustable elastic cord. Layered design for easy storage of items individually.3. REFLECTIVE: Bike back rack bag has reflective strap design to provide more safety when riding at night. Convenient tail light loop allows easy installation of your tail light.4. SAFE AND STABLE: Durable fastening straps secure the back rack bag to the bike with thin protective PE foam interior for more stability during riding.5. WITH RAIN COVER: Our bicycle rack bag also come with an extra rain cover that provides protection from dirt, sand, water, rain and snow for greater durability.Specification:Item Type: Bike Rear Rack BagMaterial: Oxford Waterproof Fabric, PU Leather, Foam.Package List:1 xBike Rear Rack Bag1 x Rainproof CoverNote:Please add some protection for your valuables.