4 PK Mens Rectangular Rimless Blue Light Blocking Reading Glasses Unisex Readers Description： Anti Blue Light Glasses：Blue light blocker & UV Lenses, Alleviates visual fatigue and discomfort from browsing mobile phones, tablets, gaming and working under fluorescent lights with UVA/UVB protection and glare reduction. Explosion Proof Polycarbonate Lens：Reduce eyestrain, anti blue ray to a great extent; Enjoy your digital time, NO worry about eye fatigue, blurred vision and headache, let you have a better sleep. Resin Spring Hinge Frame：Ultra-light and flexible resin frame material for durability and comfortable long-term wearing; Casual frame design keeps you looking professional and stylish while working or playing video games. 4 Pack of Blue Light Reading Glasses：Set of 4 rimless blue light filter glasses means you'll have a pair handy wherever you are; Keep a pair in your favorite reading spots. Specifications: Color: Black & Transparent Lens Material: Explosion Proof Polycarbonate Frame Material: ABS Available Strengths: +1.00 - +4.00 Arm Length: 140mm Frame Width: 129mm Lens With: 54.7mm Lens Height: 41mm Bridge Width: 19mm Technology: Blocks Harmful Blue Light Lightweight & Sturdy                                                                                                                      Features & Tips: Anti Eye Fatigue & Headache:Long time exposure to blue light would lead to digital eye fatigue. Wearing your blue light glasses, no more tired eyes. Reduce eye strain and sensitivity to light when facing digital screens. Great for office workers or anyone who has to look at screen all day. Minimize Headache:Do you suffer headaches from long time screen time? Our blue light blocking glasses will supercharge your health by blocking detrimental blue light while letting in all other beneficial light. Better Life:Exposure to high rate blue light will impact our sense of circadian rhythms and wreck our internal rock, then cause insomnia. Wearing our blue light filter glasses will improve your sleep, help you sleep better and feel good everyday! Design:Ultra-light and flexible resin frame material for durability and comfortable long-term wearing; Casual frame design keeps you looking professional and stylish while working or playing video games. Anti Blue Light Technology:Blue light blocker & UV Lenses, Alleviates visual fatigue and discomfort from browsing mobile phones, tablets, gaming and working under fluorescent lights with UVA/UVB protection and glare reduction. Explosion Proof:Reduce eyestrain, anti blue ray to a great extent; Enjoy your digital time, NO worry about eye fatigue, blurred vision and headache, let you have a better sleep. Reading Glasses:Set of 4 rimless blue light filter glasses means you'll have a pair handy wherever you are; Keep a pair in your favorite reading spots. Package includes: 4-Pack Mens Rectangular Rimless Blue Light Blocking Reading Glasses Unisex Readers (Select From Menu Above)