HJC CL-X7 Zilla Full-Face Off Road Motorcycle Helmet (Multi, Small) Advanced Polycarbonate Composite Shell: Revolutionary design with unique visor; Lightweight, superior fit and comfort using advanced CAD technology; "ACS" Advanced Channeling Ventilation System: Full front to back airflow flushes heat and humidity up and out; SpeedCool Interior: Removable, moisture-wicking and odor-free with anti-bacterial fabric; Large Eye Port: For maximum visibility and superior goggle fit; Glasses Groove can accommodate riders who wear glasses;