<br><b>Description:</b> <br>Super lightweight, as good for reading books. <br>Special lens coating for anti scratch/anti smudgy. <br>Anti bluelight & UV, effectively protect your eyes from computer radiation damage.</p> <br><b>Product Specification:</b> <br>Product name: Bluelight Blocker Reading Glasses <br>Material : plastic frame, resin lenses <br>Diopter available: +1 / +1.5 / +1.75/ +2 / +2.5 / +3 / +3.5 <br>Arm: 5.5" (approx.) <br>Lens height: 1.7" (approx.) <br>Total Frame: 5.43" (approx.) <br>Bridge: 0.62" (approx.) <br>Glasses Weight: 0.04 lb (approx.) <br>Packet Weight: 0.13 lb (approx.) <br>Color : Black/Gun/Brown <br>Package includes: <br>Bluelight Blocking reading glasses*4 </p> <br><b>Warm Tips:</b> <br>To avoid damage, never clean your reading glasses with tissues, towels,clothing or alcohol, and also avoid using household detergents or soaps. <br>While a few mild soaps don't harm lenses, now some extra strength soaps are powerful enough to slowly disintegrate lens coatings.