AVE A-20 Atom Modular Flip-Up Motorcycle Helmet with Integrated Bluetooth and Drop Down Sun Visor (Black, Large) Weight: 1.6 Kg or 3.52 lb Integrated Bluetooth System for pairing two helmets or mobile phone Ventilation: Proactive and Dynamic Ventilation system Visor: UV protection system with double visor, polycarbonate anti-scratch and anti-fog with replaceable outer visor Interior: Microfiber and Polyester inner fabric removable and washable