This waterproof bicycle pannier bag is made with 500D mesh cloth PVC, featuring a fully waterproof and scratch-resistant design. With a diameter of 10-21cm, the buckle is suitable for most round pipes. Weighing approximately 600g, this bag has a large capacity of 25L and measures 59*31*14cm. It also has reflective details and can be easily disassembled and assembled, offering various carrying methods. Truly a versatile and reliable choice for all your biking needs.