How many vents: The chin bar has 8 vents that are designed to enhance the flow of air through the helmet

There is 20 vents with internal channels too

Travel Pins Kit - V3

Compatible with 11-42T and 11-46T 9-speed cassettes

Cateye AMPP 2200 Front Light - Front - 2200 - Black PDP|PLP|Brake Rotor Type How many vents: The chinSee farther than ever before with the new AMPP2200, featuring an unparalleled ultra bright 2200 lumen ultra boost mode and USB C charging for universal compatibility. Crafted from robust aluminium for added durability to accompany you on every adventure. Plus, with its exclusive Enduro mode, you're guaranteed an impressive 12 hours of continuous runtime, making it your reliable partner for the long haul. Features High power rechargeable headlight