About this item Photochromic Lens The lense will change color due to the intensity of the UV light. suffering the stronger sunlight, the glasses lens will be black; The advantage of a photochromic lens is that you can wear your eyewear all day. Package Content Photochromic Polarized Sunglasses*1, Glasses Case*1, Sports glasses rope*1 , Soft Glasses Cloth*1, Polarized test card*1 This is also a gift for your family, Polarized sunglasses reduce glare reflected off of roads, bodies of water, snow, and other horizontal surfaces. Restore true color, eliminate reflected light and scattered light and protect eyes perfectly. Polarized sunglasses cut glare and haze so your eyes are more comfortable and you can see better.Effectively filter the strong light, strengthen the visual definition, reduce eye fatigue, keep the eyes always the most comfortable state. SUPER LIGHT TR FRAME mincl sunglasses frames are crafted from durable TR material, these polarized sunglasses feature a stress-resistant frame without pressure, without breaking. Its hardness is 5 times of other traditional plastic sunglasses. Ideal for cycling, driving, running, fishing, racing, skiing, climbing, and all outdoor activities enthusiasts. 90-day money-back guarantee-In the event of any damage (non-artificial damage), all customers will get a 90-day money-back guarantee. You have no risk of trying, we will provide you with the best after-sales service!