FEISEDY Photochromic lens -- adjust the transmittance through the discoloration of the lens, Lenses are slightly tinted(light gray) when indoors or at night and the lenses gradually darkens as it is exposed to ultraviolet light, but lenses are keeping the transmittance. So eyes can adapt to changes in the ambient light, reduce visual fatigue, and protect the eyes, keep the eyes always the most comfortable state. | TAC Polarized Lens -- UV400 Protection blocks 100% of harmful UVA & UVB rays. Visually restores true color, eliminates reflected or scattered light. TAC polarized triacetate lenses are impact and scratch resistant, lightweight and durable! | Lightweight Wayfarer Design -- The Ideal For Driving, Running, Fishing, Motorcycle, Cycling Bicycle, Skiing, Climbing, Trekking Or Other Outdoor Activities Enthusiasts, and is suitable as high fashion accessory and daily wear all year round. It is also gift ready, making it a wonderful yet practical gift idea for friends and Family | Product Dimensions -- Lens Width: 59MM(2.32 inches) Lens Height: 37MM(1.46 inches) Temple Length: 127MM(5.00 inches) Nose Bridge: 15MM(0.59 inches) Frame Length: 140MM(5.51 inches) | FEISEDY is aim to bring you high quality fashion experience in sunshine and nature.