Blue Light BlockingKid's glasses(NON-prescription) for daily use when kids using a computer, iPad or smart phone. glasses can cut harmful blue light. Reduce eyestrain and headache. Protect children's eyesight. Durable And Fun Frame Material: Silicon; Flexible Sleep Better Block blue light and reduce eye strain that affects children‘s bodies circadian rhythms and prevents health issues. For Ages 3-10 The eyeglasses generally fit boys and girls from ages 3 to 10, but it depends on the size of the kids.