Only Designed for Microsoft Surface Duo 2 Quantity: Left +right screen protector film Material:Matte soft screen protector film. Function: Anti-peep,anti-spy, protect privacy, anti-scratch, protect screen , keep screen clean About bubble: 1.Please remember to clean your screen on every single with the cleaning tool , especially use the dust sticker to clean your screen dust to prevent bubble. 2. If you find some place still has small bubble on screen after installation, please open one corner of the film, use the dust r sticker to remove the dust in the bubble area, and then use the scraper card to re-attach the uncovered area ，until the screen protector film fits screen overally 3. If don't know how to install film, please watch video on page first. 4. If you feel the screen is too dark after installation, you can adjust the brightness until you feel comfortable