Feisedy Photochromic and Polarized Sunglasses with UV400 Perfect for and with Round B1137 Men's Protection, Outdoors, Fishing, Driving, More.

☀【Photochromic Sunglasses】Photochromic sunglasses are glasses that change color in response to UV rays. When exposed to sunlight outdoors, the lenses gradually become tinted, and when indoors, the lens color gradually fades. The lens material contains halogen and silver, and when exposed to UV rays, the halogen and silver break down, causing the lens color to darken. This chemical reaction makes them photochromic sunglasses. Please note that the lens color change takes longer when the UV rays are weak. ☀ [Polarized lenses] Polarized sunglasses provide clear vision. They effectively cut out light from road signs that are glaring or reflecting light, from the road surface that makes it difficult to see the white lines, from light reflecting from below that can tire your eyes while running, and from golf greens that make it difficult to see the contours of the green, providing gentle protection for your eyes. ☀【HIGH-QUALITY MATERIALS】FEISEDY is dedicated to creating sunglasses with high-quality materials at reasonable prices. FEISEDY cares most about your vision and experience. The sleek design, durable polarized tint lenses, textured frames, comfortable nose pads, sturdy metal hinges, and non-slip temples are beautiful and practical, perfectly matching your personality. ☀ [Very useful] In addition to ordinary sunglasses, these have many functions and can be used in a wide range of applications, making them perfect for outdoor activities such as driving, golfing, fishing, running, cycling, mountain climbing, baseball, etc. ☀ [Please note] Photochromic lenses change color depending on the strength of UV rays in sunlight. Therefore, please note that the color and photochromic effect may be weaker in places with weak UV rays, such as an office, indoors, or on cloudy days. Please check the included UV light (blue light) and photochromic instructions for photochromic effect. Black and yellow glasses do not have a photochromic effect, so please check before purchasing.