D.O.T. Approved – New Youth Sizing; SM, MD, LG and XL – Advanced Polycarbonate Composite Shell: Revolutionary design with unique visor. Lightweight, superior fit & comfort using advanced CAD technology. – Advanced Ventilation System: Full front to back airflow flushes heat and humidity up and out. – Nylex Interior: Removable and washable. – All sizes of cheek pads are interchangeable within all sizes – Large Eye Port and maximum range adjustable visor: For maximum visibility and superior goggle fit.