Polarized CR39 lenses for sunglasses :

Size:75mm ;2mm thickness, 4/6/8 bases available;

Colors: brown , grey, green, gradient brown, grey, green colors; pass 

pass American standard test, European standard test and Australia standard test, pass drop ball test etc. 

CR39 lenses for sunglass frame not polarized 71mm:

Size: 71mm, 2.0mm thickness,  4.5 base, 6 base available;

Color: brown, grey, gradient brown,gradient grey, purple-pink,blue-pink etc;

with FDA certificate and CE certificate, pass American standard test, European standard test and Australia standard test, pass drop ball test etc.