FEATURESThe glasses can block high level of blue ray from digital screen,it can relieve eye fatigue and stress of whom are exposed long time to the digital screen.SPECIFICATIONItem: blue light blocking readers glassesGender: man and womenFrame materials: PolycarbonateLens materials: PolycarbonateDiopter available: +1.0/+1.5/+2.0/+2.5/+3.0/+3.5Frame Width: 135mm/5.31"Lens Width: 49mm/1.93"Lens Height: 29mm/1.14"Bridge Width: 20mm/0.79"Temple Length: 140mm/5.51"PACKAGE5 x Reading glasses(Color:Black,Brown,Blue,Purple,Clear)5 x Plastic Case5 x Cleaning Soft Cloth1 x BoxTIPSTo avoid damage, please don't clean your eyeglasses with paper towels or clothing or alcohol, and also avoid using household detergents or soaps. While a few mild soaps don't harm lenses, today's extra strength soaps are powerful enough to slowly disintegrate lens coatings.ABOUT USDOOViC was born to give people glasses they can actually afford but still make them look great.