Feature: 1. Universal: suitable for all ski helmets and bicycle helmets with detachable ear straps; 2. Simple: can be quickly installed and disassembled; 3. Firm: not easy to loosen.

Specification: Main body material: ABS Product color: Black Specifications: Oval  Product size: about 29.5x27x10mm/1.2x1.1x0.3in 

Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.