Large-capacity storage: With a size of 38X15.5X18cm, this mountain bike pannier has plenty of space to easily fit the necessary spare tubes, tools, water bottles, and even clothes and food for long-distance cycling or daily travel.High-quality and durable material: Made of high-strength and wear-resistant fabric, it can resist ps and friction on the road, and is not easy to break. The water-repellent coating effectively blocks rain, so even when riding in the rain, the contents of the bag can stay dry, and can be used for a long time to withstand the test of various outdoor environments.Easy installation and disassembly: It can be easily fixed on the rear shelf of the mountain bike without complex tools, and the installation is firm and stable. After riding, it can be quickly disassembled and used as a handbag, which is convenient to take items, and the operation is simple and convenient.Reasonable internal structure: the main warehouse has a large space and places large items; Keep items in an orderly manner and be clear at a glance when you pick them up, improving the efficiency of use.Night warning safety: The body of the bag is equipped with eye-catching reflective strips, which can reflect the light under the illumination of the headlights when riding at night, attract the attention of others, effectively improve the safety of riding, reduce the risk of night travel, and escort your cycling journey.