NOA Photochromic Running & Cycling Sunglasses, White

• Windshield profile. Reduces airflow reaching the eye across sustained speed.
• Category 0 to Category 4 photochromic shift. Clear at 86.6% transmittance, darkening to 7.3% under UV.
• Silicone-coated temple arms. Grip increases with moisture rather than decreasing.
• Optical clip-on compatible. Insert mounts behind the main lens, glazed to prescription by an optician.

Lens category 0 to 4, VLT 7.29%. No adjustable nose pads on NOA. Tint runs lighter in high heat. Darkened state measures Cat 4, which is not permitted for driving.