Large capacity and waterproof This rear saddle bag offers a roomy interior to store your essentials. It is made of waterproof material to protect contents from rain, keeping items dry and safe. Reflective design and durable construction The bag is wear-resistant and scratch-resistant, built to last. Reflective elements boost visibility and safety when riding at night. Wide compatibility Designed for electric bikes, road bikes, and mountain bikes, this bag offers broad compatibility with different bicycle models. Comfortable and secure The bag cover features a U-shaped double opening for easy access. An elastic cord buckle keeps items securely in place. Side pockets and reflective piping/tape add extra practicality and visibility. Use scenarios - Daily commuting in wet weather: protect documents, tools, and personal items from rain while keeping them accessible. - Weekend rides or bike touring: carry spare tubes, repair tools, snacks, and small essentials with secure organization. - Night rides: enhanced visibility thanks to reflective elements, improving safety in low-light conditions.