New helmet bought this August, used twice, but is too small and was final sale. Here's the manufacturer's description.
The CL-17's main objective is keeping your ride as cool and comfortable as possible. The ACS (Advanced Channeling Ventilation System) is designed specifically to flow air from front to back and drag heat and humidity up and out of your lid. Designed to wick away moisture, the fully removable and washable interior features SuperCool material, for those inevitable stops along the way when airflow just isn't an option.