PREMIUM MATERIAL: Constructed from durable polyester with water-resistant zippers for practical use. (Note: The polyester is not waterproof.) LARGE CAPACITY: Offers 7L of storage with a main compartment, a zipper pocket, and adjustable elastic cords. The layered design allows for easy organization, enabling you to store items separately according to your needs. RELIABLE SAFETY: Features reflective straps around the bag to enhance visibility while riding at night. A convenient tail light loop allows for easy attachment of your tail light. EXTREMELY DURABLE: Equipped with secure fastener straps to attach to your bike and thin protective PE foam interior for added stability during cycling. (Note: It is recommended to add protection for valuable items.) WATERPROOF COVER: Comes with a rain cover to shield against dirt, sand, water, rain, and snow, providing added convenience during your riding trips. USE SCENARIOS: - Ideal for daily commutes, allowing you to carry essentials securely and accessibly. - Perfect for weekend cycling adventures, keeping your gear safe from the elements. - Great for mountain biking, where durability and organization are essential for a smooth ride.