Butter Photochromic Safety

# BT201

When the sunlight changes, the tint changes. Each lens has a variable tint with particles that interact with the light as it hits the lens. The brighter the sun, the darker the tint. As the light dims, the tint fades, providing a clear view.

They also block dangerous UV rays and filter Harmful Blue Light , which can be found outdoors and from digital devices. These safety rated photochromic sunglasses will improve contrast and clarity, reduce glare, and darken/lighten depending on ultraviolet exposure.

- Matte Black Frame, Photochromic Clear to Smoke Safety Lens with Gray Foam.
- Completely clear indoors and at night
- Fast fade back speed.
- Meets ANSI Z87 safety requirements.
- 100% UVA and UVB protections
- (L = 161mm, W = 139mm, H = 47mm