ANTI FOG TECHNOLOGY: Unique 3-layer FDA&CE certification anti-fog coated lens can avoid blurred vision caused by fogging in hot or humid settings or wearing a mask, bring a long-lasting fog-free better visibility with TIJN anti fog safety glassesTIJN BLUE LIGHT FILTER LENS: Overexposure from harmful blue ray without any protection will easily cause eye fatigue,blurred vision and headache,use TIJN newest blue light blocking technology lens to combine efficiency anti blu-ray with slightly yellow tint not only give you a charming appearance but also can enjoy your digital screen time and better sleep.It's a nice clear blue light glasses for teens,women and menTR90 LIGHTWEIGHT FRAME: TIJN computer glasses use TR90 which is very lightweight and comfortable materials,will reduce the burden on the nose.Metal stable hinges can open smoothly and is more durable for long time wonder visual feast tripRETRO ROUND FRAME DESIGN: TIJN clear frame round blue light glasses is classic and fashionable, will never out of style.Keyhole nose bridge create a memorable look that's great for any outfitOUR SERVICE: 2 Pairs of blue screen glasses for better price with premium quality. We stick to pay attention to product quality, if there's any quality problems please feel free to contact us