Large Capacity: This bicycle saddle bag offers a 30L capacity, great for storing all your riding essentials such as cellphones, wallets, books, water bottles, repair tools, and food, and is suitable for long distance travel Multifunctional Design: This bag can be used as bike double pannier bag, single shoulder bag, waterproof backpack, and handbag, to meet different riding needs Features: The bike saddle bag includes reflective markers for night time riding, ensuring you are visible to other road users. The handle design makes it easy to carry and improves the durability of the bag Material: This bicycle trunk pannier rear seat bag is designed with premium PVC rubber nylon materials that are resistant to wear and tear, strong waterproof performance and can adapt to various bad weather Versatile Use: Ideal for mountain bikes or road bikes, this rear rack bag serves as a tail bag and hanger bag - a great accessory for any cycling enthusiast Specification: Material: PVC Rubber Nylon Size Chart: 31.5 cmx15.3 cmx45 cm/12.40 inchx6.02 inchx17.72 inch Package Includes: 1Bike Pannier Bag Note: Please allow slightly errors due to manual measurement and different monitors.