Item Type: Blue Light Blocking Glasses Material: PC Lens Material: PC polyester Anti Blue Light Range: 400-500nm Package List 1 x Blue Light Blocking Glasses 1 x Storage Box 1 x Cleaning Cloth 1[Blue Light Blocking] Over 99% of harmful blue light between 400NM and 500NM is blocked by a variety of different anti UV materials and multi layer coating technology. 2[PC Nose Clip] These blue light glasses are equipped with PC material nose clip, which allows you to wear comfortably and take care of your eyes. 3[Frosted Edges] The edges of the lenses of our glasses are polished with a frosting process to reject the risk of scratches. 4[Wide Range of Uses] These blue light glasses can be used for people who often need to use cell phones and computers to prevent radiation, blue light and eye strain. 5[Small and Portable] The anti blue light glasses are compact, lightweight, easy to carry and use, and very effective.