‍[Material]The helmet cover is made of soft polyester punji fabric and reflective material. Protect your bicycle helmet from adverse weather, water, rain, fog, dust and snow. You can keep your head dry and warm when you enjoy riding..‍[Reflective helmet cover]The helmet cover has a reflective design to improve the visibility when riding at night. Give you more sense of security, especially at night. High visibility makes it r to ride at night..‍[Size]The applicable head circumference of helmet mask products is 85cm ± 2cm. Due to the convenient elastic edge design, one size is suitable for most adult riding helmets..‍[Wind and rain protection]The helmet cover is especially suitable for the environment with large temperature difference and hot light. It can protect the helmet from the impact of wind, rain, dust or strong wind. Wearing the helmet cover can reduce pain, and it is easy to clean dirt..‍[Multifunction]The anti-light helmet is very suitable for bicycles, motorcycles, bags, wheelchairs and helmets. It can be used to clearly mark warehouses, dangerous places, special areas and other places. It can also be used for road signs.