The Joey Blue Blocking Computer Glasses will help your kids and grandkids with eyestrain while they are on their devices. Some kids do most all of their school work on computer and then spend time at home on phones and tablets. Some kids even have trouble falling asleep at night after too many blue rays. These glasses are narrow for small faces and will keep your kids' eyes safer as they stare at screens. The frames have spring hingers for a more comfortable and flexible fit. Frame Measurements: 4 3/4" x 1 3/8" (temple to temple x height of lens}