Please note: Amazon / Ebay / Poshmark sales are prohibited. Lenses High quality, impact resistant blue light reading lenses. Get additional protection from eye strain and more comfort while reading from digital screens. Blue light filtering lenses block up to 30% of potentially harmful high-energy light ( HEV ). Frame Lightweight and optical friendly. Handcrafted premium acetate frames featuring spring hinges for all day comfort. Frame size 50-16-140 Medium Fit Packaging Case and cleaning cloth included.