Description: TR90 material, super toughness and more ultra LIGHTWEIGHT(about 0.03 lb), elasticity for all faces, unbreakable. Super lightweight, as good for reading books. Anti bluelight & UV, effectively protect your eyes from computer radiation damage. Product Specification: Product name: Blue Light Blocking Reading Glasses TR90 Material : TR90 + AC Lense Diopter available: +0 / +1 / …