A. Professional Photochromic Progressive Reading Glasses - Photochromic reading glasses change color quickly and freely. Blue light blocking glasses are clear indoors or at night, and the transition reading glasses for men automatically darken to the shade of sunglasses when exposed to UV sunlight. B. Three Vision Levels - Progressive reading glasses for women and men make it easy to meet daily needs. The bottom layer is the intensity you choose and can help you read, the transition in the middle layer can help you see fine print on your computer and phone, and the top layer has no degrees to help you communicate in daily life. Multifocal sunglasses solve various needs and can be a great gift for friends, family and yourself this year. C. The progressive multifocal reading glasses' transition lenses help protect against harmful blue light, reduce screen glare, and progressive sunglasses for men make your eyes more comfortable when using electronics and can indirectly improve sleep quality for a more comfortable experience. D. Spring Hinges Opening at 25° - Black Classic Progressive Eyeglass Frames are suitable for both men and women, covering a large field of vision, making you look more professional and stylish while working or reading. Flexible and durable spring hinges and tips ensure that each pair of blue light blocking glasses fits the wearer's face well without lines. Soft nose pads can adapt to different nose shapes. You can use them easily anywhere.