Amber tinted lenses to minimize Digital Eye Strain caused by harmful blue light emitted from digital screens;Great for alleviating visual fatigue and discomfort from long periods of web surfing, gaming and working under fluorescent lights;Ultra light weight and flexible TR90 frame material for long term use and durability;Includes frame carrying case and cleaning cloth;Your computer reader magnification/power depends on how far you are from the screen you are viewing. For a laptop or desktop about 19+ inches away, select a magnification HALF your normal reading power. For a smartphone, tablet or a book about 12 to 18 inches away, select your normal reading power