Dear Friend,Thanks for visiting my shop,I hope you have a great journey in my shop.Please feel free to contact us if you have any questions. WhatsApp：+8613313863880 Photochromic lenses change from light transparent to black under the irradiation of ultraviolet rays (sunlight). photochromic bicycle glasses/sunglasses Features: adjustable nose pad, silicone nose support, Soft and elastic to the touch，more comfortable to wear Function: photochromic, UV resistant, windproof Gender: Suitable for both men and women Lens width: 145mm Camera height: 65MM Weight of glasses:35g Frame material: TR90 Optical properties of lenses: photochromic/UV400 Set configuration: 1 * TR90 frame 1 * photochromic lens 1 * Myopia glasses frame 1 * Glasses case 1 * Glasses bag 1 * Glasses cloth 1 * Sports headband