BLUE LIGHT BLOCKING - Kid'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.^ The eyeglasses generally fit boys and girls , it depends on the size of the kids. For more accuracy, please refer to the frame size.Suggest age is below 8 years old^ DURABLE and FUN - Frame Material: Plastic; Lens Material: Polycarbonate; This durable and fun glasses is available in a wide array of styles that your kids will appreciate.^ SLEEP BETTER - Block blue light and reduce eye strain that affects childrens bodies circadian rhythms and prevents health issues.^ SATISFIED- Lens Height: 34 millimeters Bridge Width: 15 millimeters Arm Length: 124millimeters ^