Amazon.com: Felix Gray Faraday Blue Light Blocking Glasses 。Like new, worn twice Sazerac color This classic frame employs a wider square lens. The edges are soft, lending the frames a smart and chic look. Perfect for a slightly larger face or someone who likes to see more lens than frame in their line of vision. FEATURES Optical grade lenses Proprietary blue light lenses that benefit sleep, health and performance Double-sided anti-reflective coating Super hydrophobic treatment Premium organic acetate frame Hard case and cleaning cloth included Size 53-17-145 LENS TYPES CLEAR LENSES Filter up to 15X more impactful blue light than other clear lenses Up to 3X increase in melatonin levels when worn 2 hours before bedtime 9/10 customers feel relief from eye strain, headaches and/or blurry vision 47% increase in cognition; improved focus and productivity No color distortion Ideal for all day wear