Blocks 100% of blue light and most green light from sunset to sleep for optimal melatonin release
Filters full 380-540 nm wavelength range to prevent artificial light from disrupting sleep cycles
Premium wrap-around square frame in rich tortoise shell color for comfort and style
Italian mazuchelli acetate and German engineered steel construction for durability
Includes luxury branded case and cleaning cloth for convenience and care
Summarized by Shop
Nathaniel Kleitman was an American physiologist and sleep researcher who served as Professor Emeritus in Physiology at the University of Chicago. He is recognized as the father of modern sleep research, and is the author of the seminal 1939 book Sleep and Wakefulness.
Square frames in a rich tortoise shell hue with subtle curves and a cle
Lens Filters
380-540 nm (blue and green light)
Blue Light Blocking
100% (complete cut-off around 500 nm)
Green Light Blocking
77% (less than 5% transmission to ~550 nm)
Frame Material
Italian mazuchelli acetate, German engineered steel