Men Polarized Driving Chameleon Glasses Male Change Color Sun Glasses

Frame Material : Alloy
Lenses Optical Attribute : Polarized
Lens Height : 41mm
Lenses Material : Polycarbonate
One size fit all face
Color of lens :Black
Color of Fram :Black
The intelligent color-changing feature provides good light-transmittance and clear vision. 
Principles of discoloration: In ultraviolet light, the radiation will cause a chemical reaction that changes the lenses uniformly"