Croakies Perry Photochromic Progressive Eyewear with 2.50 strength. UV 400 sunglasses for outdoor/blue light eyeglasses for HEV devices. Croakies vision, improvement and protection eyewear provides all day eye protection against harmful blue light, emitting devices and UV rays. Premium photochromic lens technology that darkens and automatically adjust to the perfect viewing tint when outdoors while providing 100% UV protection. Converts to indoor premium blue light blocking lens within 90 seconds! Technology that protects against glare, filters harmful, high energy, visible light and helps reduce eye strain and fatigue. This bundle comes with graphite colored glasses, soft/hard travel case, large microfiber cloth to keep them clean and matching. eyewear retainer that is soft, durable, and washable. New in box!