Does your kid like to read or use the computer frequently But you know, That will bring bad influence to kid. Actually, A pair of good glasses will change the child's habits of reading or using computer. At now, This glasses may not only be a gift, but also a tool to keep healthy. Main Features: Material:Plastic Colors: Black, Blue, Green, Purple,Red Lens width: 46 millimeters Frame width: 123 millimeters Lens height: 35 millimeters Bridge: 15 millimeters Arm: 135 millimeters These will fit on most kids ages 3-10. Since the size of children vary, please use the measurements for sizin Package Content: 1 x Glasses 1 x Hard Protection Box Eyeglasses Maintenance: 1.No paper towel or cloth, which can grind dust and fibers into Lenses and leave scratches 2.Avoid using household detergents or soaps, they are powerful enough to slowly disintegrate Lenses coatings 3.Be careful of the seawater corrosion and avoid consistent hyperthermal exposure under the car windshield