Shell: Polycarbonate, with a protective lacquer against UV rays. Inner lining: Anti-allergenic, antibacterial, removable and washable. Ventilation: Channels in the shell for better air circulation inside, with a system for pushing the hot air out. Visor: Scratch-resistant, with a system for easy replacement without tools. An internal tinted visor that closes inside the shell. Fastening: Micrometric, ratchet type, for a correct fit and easy opening. Specification: ECE 22.05 Features: Weight:1150gr.