What is POLARIZED LENS？Polarizing lens principle: effectively exclude and filter out the scattered light in the beam. So that the light can be on the track of the optical axis into the eye visual image, so clear and natural visionand can protect the eyes from UV damage.Restore true color, eliminate reflected light and scattered light and protect eyes perfectly. Ideal for outdoor sports (eg sea activities, skiing or fishing). What is aluminum-magnesium alloy？ Aluminum-magnesium alloy, which is a synthetic aluminum metal and magnesium metal in,Its hardness is strong , low density, better heat dissipation, strong compressive strength, its hardness is several times of the traditional plastic , but the weight of only one-third of the latter, it is also called aviation materials;The Aluminum-magnesium alloy material excellent performance, high strength, corrosion resistance, durable； We tested a lot of material and finally decided to use the best quality aluminum-magnesium alloy as our sunglasses frame； The benefits of COSVER sunglasses： 1：We use the best quality materials as our raw materials,Designed to meet the European and American people,Safe and fashion; 2：Different from other sunglasses plastic lenses，Our lenses are polarized lenses,They provide protection against the sun's harmful rays, effectively protect our eyes in outdoor activities,can be highly useful for sports, driving, and fishing by helping the participant in these activities to see more clearly. 3：We promise Lifetime Breakage Warranty on Frame & Lens and 30 Day Money Back Guarantee, You have no risk to try； PACKAGE: Sunglasses *1Instruction book *1Glasses Cloth*1Polarized test card*1Repair screwdriver *1 Glasses Box *1 CARE:Please use neutral detergent or soap water to clean, gently wipe dry with a clean soft cloth. TIPS:Great gift idea
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