1. Reflective strip design, safer to ride at night 2. Waterproof fabric. Water resistance, abrasion resistance, and the overall appearance is more beautiful 3. Large capacity, you can put a full helmet, so there are no more embarrassing scenes such as holding a helmet while traveling 4. Not only for putting on the helmet, but also for leisure travel on weekdays, it is enough 5. Material: Outer Waterproof fabric, polyester cloth lining