Suomy SR Sport Helmet (Diamond Grey, Small) Visor: Anti-fog and anti-scratch - 2 millimeters thermoformed polycarbonate face shield; does not require any special tool to be changed Comfort liner: Completely removable and made in anallergenic polyester fabric with antibacterial treatment; the fabric is completely washable; cheek pads and the inner liners are interchangeable and available in different sizes for a custom fit Ventilation system: lower ventilation and front upper ventilation, optimizes the internal airflow and lets the air go out through 2 upper fixed air vents especially designed for perfect shell aeration inside the shell Retention system: Classic D-ring system, with the strap fixing device patented by Suomy Safety standards: ECE 22.05 DOT