This 25L Double Carrying Bicycle Rear Bag is a large capacity bag that can hold drinks, gloves, raincoats, and more. With 600D high-density waterproof fabric, it is water-resistant and weather-resistant. It has a scratch-proof feature that keeps it from wearing and tearing. The side zip pockets have reflective piping or ribbon design for a safer ride at night. Its elastic criss-cross rubber string is used to hold and fasten the raincoat. The U-shaped double-open zipper is used to easily access items inside the bag. With an adjustable shoulder strap, this backpack can be worn as a shoulder bag or a messenger bag. The bag cover and body are made from PE cotton filling protection, with a 3D structure and internal patch design, that ensures the effective use of vehicle space. It also has a quick-release function for easy removal.