This is thin Screen film that provides greater touch sensitivity for MacBook and protect for MacBook& 39;s LCD screen against dust and scratches and light reflecting. Made of PET material, through special antivignetting treated, effectively eliminate the glare caused by light. Easy to apply and easy to remove. Instructions: Close your computer, cleaning the screen and remove the dust or dirt. Peel off the one side of film that marked 1 about 3 - 5cm, align one side of the screen, peel of film and push a card forward at the same time. After sticking the film, squeeze the small bubble out in card, then peel off the outer film that marked 2. Item Name: Laptop Screen Protector Material: PET Compatible : for Apple Compatible Model: for MacBook Air 11.6"/13", for MacBook Pro 13"/15" Features: Anti Scratch, High Sensitivity, Anti-Dust, Full Cover, Antivignetting Surface Hardness: 4H Size: 11.6"/13"/15" (Approx.) Notes: Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Laptop Screen Protector (The notebook is not included.)