The Fat Boy photochromic sunglasses feature transitional lens technology. This photochromic technology is caused by molecular reactions to UV light that allows the lenses to darken reducing the amount of light reaching the eyes. The lens transmission allows 86%of light through indoors & allows 56% of light through outdoors. Featuring anti-fog, polycarbonate lenses. Increased comfort & protection with closed-cell memory foam around the eyes. The microfiber storage sleeve can be used for lens cleaning.

Specifications
Frame Color: Black
Frame Convertible: N/A
Frame Finish: High Gloss
Frame Foam Type: Closed cell EVA
Frame Material: Thermoplastic
Frame RX Ready: Yes
Frame Temples: Skull
Lens Coatings: 100% UVA and UVB protection
Lens Color: Photogrey
Lenses Interchangeable: No
Lens Material: Polycarbonate
Other included Accessories: Microfiber Carry Pouch, doubles as cleaning cloth
Lens Upgrades: NXT Transitional (Light to Dark)
Special Features: Photochromic, Anti-fog lenses
Standards Met: CE400
Storage: Microfiber Carry Pouch
Warranty: Limited Lifetime against Manufacturing Defects