These junior size (ages 4+) Screen Time Blue Light Blocking glasses, also known as Anti-Visual Noise (AVN) glasses, block harmful blue light rays caused by electronic screens. They protect the eyes from these harmful rays and reduce eye strain, headaches and migraines. Available in our unbreakable, bendable frames, they block over 80% of the most harmful blue light rays (under wavelength 420 nm). Lightweight, and shatterproof with no yellow/orange colored lenses.