<p><b>Description:</b></p> <p> TR90 material, super toughness and more ultra LIGHTWEIGHT(about 0.03 lb), elasticity for all faces, unbreakable.</p> <p>Super lightweight, as good for reading books.</p> <p>Anti bluelight & UV, effectively protect your eyes from computer radiation damage.</p> <p><br><b>Product Specification:</b></p> <p>Product name: Blue Light Blocking Reading Glasses TR90</p> <p>Material : TR90 + AC Lense</p> <p>Diopter available: +0 / +1 / +1.5 / +2 / +2.5 / +3 / +3.5 / +4</p> <p>Arm: 5.55" (approx.) </p> <p>Lens height: 1.30" (approx.) </p> <p>Total Frame: 5.51" (approx.) </p> <p>Glasses Weight: 0.03 lb (approx.) </p> <p>Packet Weight: 0.06 lb (approx.) </p> <p>Color : Black & White</p> <p>Package includes: Bluelight Blocking reading glasses*1, microfiber pouch*1, EVA pouch*1, glasses cloth*1</p> <p><br><b>Warm Tipp:</b></p> <p>To avoid damage, never clean your reading glasses with tissues, towels,clothing or alcohol, and also avoid using household detergents or soaps. While a few mild soaps don't harm lenses, now some extra strength soaps are powerful enough to slowly disintegrate lens coatings. </p>