Hard Shell Design: The saddlebag made of high-quality PU is very abrasion-resistant and durable, does not deform, and is easy to clean. Water-Resistant: With a seamless zipper, the PU saddlebag offers waterproof protection for your belongings, even on rainy days. (Do not expose to heavy rain for extended periods.) Large Capacity: This bicycle bag provides ample storage space for your smartphone, wallet, repair tools, and more. The internal mesh pocket is ideal for small items like credit cards or keys. Safe at Night: The saddlebag features a green line powered by a AAA battery for illumination in the dark, and a rear light hook for an extra lamp for added safety. The reflective logo enhances visibility during night rides. Easy to Install: With double security, you can mount the quick-release on the bike seat and easily attach the bag with the quick closure and Velcro.