1)double glasses,anti-dust,durable ,no air bubble easy to clean 2)4.2-4.4mm thinkness,L*D:15*15cm 3)professional factory Company profile: Unihank Industrial Ltd ,founded in 2007,is the most professional supplier in China for 3D glasses and 3D system solution. Our main products include 3D Glasses,Active shutter 3D glasses,Paper 3D Glasses,Plastic 3D Glasses,Anaglyphic 3D Glasses,Linear Polarized ...