Dual lenses Bluetooth slot 3C certified.KPA Housing The housing is designed for LS2’s proprietary KPA polycarbonate, a proprietary blend of space-age thermoplastics and additional materials specially formulated by LS2 for light weight and penetration resistance, some flexibility, and energy dispersion that is light, yet robust.Detachable brim Personalized brim, adjustable, easy to disassemble, KPA material, not easy to break The brim can be adjusted according to personal preference, turn the screw counterclockwise to remove the brim with your bare hands.High-definition dual-lens design The lens is made of a type of PC material with three-dimensional optical correction, which has high impact resistance, avoids deformation, and maintains clarity Built-in sunglasses with external large-field view lenses.Comfortable and luxurious lining Soft and skin-friendly, comfortable to wear, absorbs moisture and stays fresh while riding.3D three-dimensional ventilation system.Multiple breathable and long-lasting dry ten vents to keep the inside of the helmet ventilated and breathable