1. eco-friendly material 2. 0.07mm red & blue PET filter lens 3. 4 color printing 4. factory outlet 1. Material: 230g duplex whith card board2. Lens: red & blue PET filter lens3. Expand Size: 410mm*42mm4. Print: 4 color printing on surface and black inside5. Usage: 3D TV, 3D movies, 3D games, promotional gift, bussiness gift, advertisements, etc.6. OEM/ODM service offered Can make as customers' ...