Tera 1Pair of Clip-on Polarized Circular IMAX Myopia Glasses with Tera Dust Cloth for 3D IMAX Cinemas Movies Material of frame: High quality and light weight plastic. Material of lens: 0.72mmTAC polarized lenses with anti-UV380 treatment. Polarization degree: 99.8%. Single transmission: 43.5%. Dimension: approx.13x3.9cm/5.1x1.5". Net Weight: approx. 35g. Suitable for Almost all the 3D IMAX cinemas movies. Please Note that Masterimage 3D, Xpand active 3D, DOLBY 3D cinemas and active 3D TV are NOT COMPATIBLE!