Features: These helmets bottom base for various scenarios such as daily commuting, leisurely riding, or participating in motorcycle event, ensuring your gear is constantly in top condition for safe rides. This helmets base plate is lightweight yet durability, providing excellent impact resistance and long lasting performances. Ideal for motorcycle enthusiasts, professional racers, and outdoor adventurers who prioritize safety and comfort in their riding gear. Perfect for city commuting, this kit ensures helmets stability and enhances riding safety across diverse environments. This helmets bottom base offering antivibration visibility adjustment and crash protected lens retention for urban streets and extreme temperature adventures. Specifications: Weight: 35g Component:ABS Size: Approx.8.5cm For DARKEN Color: Black Package Includes: 1 Set Helmets Base Plate note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.