1、1680D Oxford Cloth: Fabric is made of 1680D Oxford cloth for waterproof and wear resistance. 2、190T Polyester: Inner lining is made of 190T polyester waterproof fabric to better protect the items, webbing edging, meticulous workmanship. 3、Sealed Waterproof Cover: Although the battery will not be affected in light rain, it will be unsafe in heavy rain. Waterproof cover is detachable and sealed, which can well protect the battery. 4、Easy to Disassemble and Clean: When riding on mud and puddles, even if there are more mud puddles and puddles, don't worry about the battery getting wet or dirty. 5、Drawstring Design: Left and right sides of the waterproof cover are equipped with high elasticity adjustment buckles and needle through ropes. When the waterproof cover is used, the two sides can be tightened, and the waterproof effect is better.