Lifetime Warranty-hunsquer ensures all our customers with 100% Money Back Guarantee and Lifetime Breakage Warranty for our product. In case of any broken issues,please contact us without hesitation. We will provide the best service until our customers are satisfied. You have no risk to try. Polycarbonate Hd Lens-hunsquer Anti reflective,non-prescription clear lens is with no color difference and restore the true color. You can also remove the lens at any time and replace it with the prescription lens you want. Excellent Material-Ultra-light weight and flexible material is super suitable for long-term comfortable wearing. hunsquer is always purchg the best products for our customers. Sleep Better -You'll never have trouble with sleeping again with hunsquer blue light blocking glasses. It relives eye strain and headache, so that you can enjoy a restful deeper sleep. Reduce Eyestrain-Enjoy your digital time, No worry about eye fatigue, blurred vision and headache. Because the glasses block the most harmful blue light from computer, phone and tv. Arm: 5.5 inches. Bridge: 0.7 inches. Lens width: 3.2 inches. Non Polarized. Plastic lens. Plastic frame. Imported.