Secure with Ease: This bike rack bag features a robust 3-digit combination lock, ensuring your valuables remain protected whether you're commuting in the city or exploring rugged terrains. The lock is seamlessly integrated for both convenience and security. Crafted for Endurance: Constructed from resilient 600D Oxford fabric coated with PU, this waterproof bike bag your essentials against the elements. Its structure is reinforced with PE cotton padding, making it not only but also protective against impacts. Enhanced Nighttime Visibility: Stay visible and safe during night rides thanks to the bag's extensive reflective detailing and a dedicated taillight hanger. Although the taillight is not included, the setup allows for easy attachment, significantly boosting your safety after dark. Spacious Storage Solutions: Offering a generous 8L capacity, this bike trunk bag is designed with a variety of pockets including a main compartment, dual side pockets, a top zip pouch, and three internal mesh pockets. External elastic bands further aid in organizing and securing your items. Versatility and Convenience Combined: Doubling as a stylish chest bag with its concealed shoulder strap, this bike bag is ideal for daily commutes and casual outings. Its installation is straightforward with four adjustable Nylon Sticker straps and a quick-release system, fitting most bike racks securely. Size:8L Style:Upgraded with lock Size:36x17x15CM Colour:Black Material:Oxford Cloth + cotton velvet base + PU Package Contents: 1 * Rear Seat Bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.