LimoStudio LCD Screen Protector - 2.7" for Canon/Nikon/Pentax/Sony/Olympus, AGG981 It is rigid and made of optical glass material, which achieves more than 90% of transmittance Only 0.5mm thick with 6 layers of coatings and UV Protection. Optical glass strengthened through special crafting process. Prevent scratches, collisions and moderate impact to the LCD screen. It can be removed and reused if the glue layer hasn't been damaged.