Manufacturer: Gunnar. Protect your kids eyes in the digital age with Cruz Kids, a new line of protective glasses from Gunnar, the leading experts in blue light blocking technology. Designed with a durable nylon frame and complete with smudge resistant lenses that come in both Clear (blocks 35 percent blue light) and Amber (blocks 65 percent blue light) tint options, these glasses are clinically proven and doctor recommended. Your kids eyes could not be in safer hands. Small size suits most children aged 4 - 8 years.