This is original new 3D GLASS clip With the 0.72mm thick Glass lens. and good 3D Vision quality! Clip-on 3D Glasses suit for: VIZIO LG, VIEWSONIC and other Passive Type 3D TV, Remind: Because 3D TV have two type: Passive and Active, Our selled is for Passive. The obvious difference between Passive and ACTIVE 3D TYPE is :Passive 3D glass do not need any battery or charge; ACTIVE is need Charge or Battery to use. Before you buying, please check this 3D Glasses is only for Passive circular polarized 3D Type TV. Not for Active shutter 3D TV. 2 Pairs Clip on 3D Glasses with free gift · Quantity:2 pairs clip on 3D glasses+ 1 free gift cloth· 100% brand new· Colour:Black· Made of durable material· Size: 13.5CM*4CM· Clip-on 3D Glasses suit for: Passive 3D TV, 3D IMAX Theatre; 3D Blu-ray DVD Lens material: thick to 0.72 mmTAC polarized lenses, and resistance to UV400 processing, double-sided TAC compound and hardened. Optical parameters: polarization degree 99.9%, monomer through rate 43.5%, compensation parameters 125 nm / 138 nm.