Product name: X400 ski windproof glasses Product packaging: single OPP bag packaging Packing quantity: 250 pieces per box, 25 pieces per medium box Product weight: 18kg per box Product box specifications: 52 50 40 Product color: Transparent, Yellow, Beige, Gray, Multicolor Lens material: PC material Frame material: TPU Headband: Advanced design fits various helmets, scopes, telescopes, and night vision systems. Test: Impact-resistant Lenses Lens: The lens is made of polycarbonate fiber POLYCARBONATE reinforced lens. Note: Folding at a large angle can damage the coating on the frame surface; please avoid folding frequently. Features: The outer frame of the eye mask is equipped with a ventilation system to increase airflow and comfort during operation. High-quality, lightweight, sturdy yet close-fitting, suitable for any face shape design, can be used with night vision goggles.