Mountain Bike Helmet with Built-In Rear Light – ZK-013 Rucksack The surface of the battery

The surface of the battery cover is smooth and does not easily absorb dust and dirt

making it suitable for mountain bikes

The 9/16 inch axle fits most mountain bikes

ensuring bikes are parked stably and neatly

It can be stored directly in a pocket or bag when not in use

Mountain Bike Helmet with Built-In Rear Light – ZK-013 Rucksack The surface of the batteryFEATURES Ultralight and Integrally molded: Designed with an insect net for added protection. Durability: Waterproof and shockproof, ensuring safety in various conditions. All weather Safety: Suitable for use in all weather, providing consistent protection. Certified Safety: Comes with CE certification, assuring high safety standards. LED Highlight Taillight: Equipped with a taillight for enhanced visibility and warning during rides. Key Features