Lenses feature ultraviolet protection level UV400 (100% UV); ABS plastic frames and Polycarbonate lenses;Adult-size Blue Light Blocking glasses; Wearing these can help limit eyes from exposure to blue light (mostly found in technology items such as phones, tablets and computers) which can cause strain to the human eye; The wavelength of blue light can be harmful to the retina (generally discomfort) and can even affect sleep; Product Size: 5.7" w x 2" h x 6" d;
