1.the lens have different color ,red blue green 2.it is used for 3d glasses 3.it is not easily be scratched ,and it is durable 1.the lens have different color ,red blue green2.it is used for 3d glasses,polarized 3d glasses ,light seperated glasses.etc.3.it is not easily be scratched ,and it is durable4.we can offer it with good quality and competitive price. 3d glasses lens