CON-STRAIN™ blocks blue light and help prevent digital eye strain.

WHAT IS BLUE LIGHT? Blue light is a high-frequency light wave between 380 - 485 nm. It is emitted from the digital screens of your smartphones and computers. You are exposed to high amount of blue light when you're holding a smartphone very close distance to your eyes.

HOW IT WORKS? MetroSunnies Con-Strain™ protect your eyes from the blue light emitted from digital screens. Long hours of screen exposure can be harmful to your eyes as it may cause digital eye strain and disrupt your sleep quality.

PRO TIP: Wearing blue light glasses may help you sleep better.