Blue Light Blocking Lenses. Best-in-class frequency lenses. Superior hard coat for anti scratch durability. Anti-reflective coatings to mitigate reflections and glare. Super hydro-phobic and oleo-phobic coatings for anti smudge. Handcrafted acetate designs utilizing state of the art CNC and finishing for fit, function, and durability. 100% Happiness Guarantee with easy returns.