I know that we see beautiful photos on the Internet, so that we buy them by impulse, so we provide real buyer feedback, you can see more close to life. You can see that this pair of sunglasses is medium in size and can be worn as long as 2 to 8 years old. Sunglasses are not only for children to play, to swim, or to play football, etc., and everyday wear is also a good choice. Neighbors may ask, wow, you have a mother who is too good. . <br> <b>What are blue-light glasses for kids? : </b><br> Blue light is a high-energy lightwave that is found in sunlight and digital screens. Most children use their smartphones and tablets for more than three hours a day. <br> While there is no evidence that blue light can cause permanent eye damage, reducing your child’s exposure can help ease digital eye strain. <br> We call these lenses Blue Protect, and they are available on most of our glasses, prescription or not. <br><br> <b>Measurements: </b><br> - Overall Width: 122mm / 4.8inches <br> - Lens Width: 45mm / 1.77inches<br> - Lens Height: 36mm / 1.4inches <br> - Temple Length: 131mm / 5.1inches <br> - Bridge Width: 15mm / 0.59inches<br> <b>Package Content: </b><br> 1). 1* Square kids blue light blocking glasses <br> 2). 1*Leather Case<br> 3). 1*Glasses Pouch<br> 4). 1*Cleaning Cloth<br> 5). 1*Mini Screwdriver<br> <b>CARE</b><b> 1. You can Gently wipe dry with a clean soft cloth.To avoid damage, never clean your sunglasses with paper towels or clothing, which can grind dust and fibers into lenses and leave scratches.<br> 2.Never leave any sunglasses in the car in direct sunlight, especially in summer. Prolonged exposure to the oven-like temperatures inside a car can degrade the lens.. <br> 3. Please clean with fresh water if the lenses are soaked in sea water or salted water because salted water will corrode them. <br> <b>Don't Hesitate. ADD TO CART RIGHT NOW!! ! <b>