GUNNAR Glasses Case
$9.99
What is Blue Light
Protection Factor™ (BLPF)?
Just how Sun Protection Factor (SPF) measures protection for the skin, the BLPF scale measures lens protection for the eye against artificial blue light. The higher the number, the better.
Clear
BLPF 35
For discreet protection without the amber tint
Amber
BLPF 65
For optimal protection and performance
Sun
BLPF 90
For protection from digital screens in sunlit environments
Amber Max
BLPF 98
Max protection for those who are highly sensitive or working at night
