The premier Composite Downhill MTB Helmet from 100% has landed. The Aircraft is precision engineered with a Fiberglass Composite shell providing a very strong, yet lightweight design. 25 enhanced venting channels create the Active Cooling System; specifically designed to manage airflow and ventilate the entire helmet. Lightweight Design: Featuring a Fiberglass Composite shell. Active Cooling System: Maximizes airflow with a staggering 25 ventilation ports. Antimicrobial, washable and replaceable comfort liner, cheek pads and chin strap cover Emergency Release Cheek Pads: For quick, safe removal. Integrated Compartment: Accepts inflatable emergency release systems. Compatible: With most popular neck brace systems. Steel D-Ring buckle: Provides a secure fit while limiting weight. Perfect Fit: Engineered with 2 Shell sizes and 3 EPS Sizes and 4 Cheek pad options Adjustable Visor: With machined lightweight aluminum screws.