Features:1. Wear-resistant and durable,High capacity,Layered design,Large opening design.2. Reflective safety strips, 3 underside magic stick straps,Water resistant fabric, Expandable top section.3. Top-side adjustable cargo cord. Bottle holder,Carrying handle & detachable shoulder strap with rain cover4. Three integrated magic strap tie-down straps on the bottom of the bag,Large main expandable compartment, Side pockets with fold out panniers.5. Which are designed to wrap around an existing bicycle rack to hold it securely when on the move.6. Bicycle Cycle Pannier Saddle Rear Rack Travel Bag with Rain Cover. Specification:Colour: BlackMaterial: PUSize: about 31*20*15cmW:225g Package included:1X Bicycle storage bag Notes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow slight dimension difference due to different manual measurement.