1, Raw material 2, Metal clip on 3, 1.1mm thickness TAC lens 4, ... the lens is 0.4/1.1mm thickness without any scrape,best quality2) higher stability, good causticity, anti ... -abrasion;3) can be hung in any optical glasses;4) Whole qualit grade: A+; ... CE and EN 71 certificated ;2) OEM Services:We can do any style 3D Glasses according to your shape, thickness ,logo ...