From the manufacturer

Screen Protector
A screen protector is used to protect your precious phone or digital device from all the sides along with your phone’s screen. It is designed to protect your phone screen from scratches and scuffs without spoiling the look or feel of the device. All your phone’s buttons, ports, and other features, are easily accessible.

How to Apply
1. Peel the film carefully from the protector
2. Clean the surface for any dirt or dust with a soft cloth
3. Place the screen protector firmly on the surface
4. Press gently to avoid any air bubbles.
Anti-glare matte technology which Removes glare and resists fingerprints
Made from the highest quality Japanese PET Film with 100% Bubble-Free Adhesives for easy installation and no residue when removed
Highest Quality Multi Layer Premium Film with self-adhering surface, leave no residue when removed
Easy to install: the film with automatic adsorption layer can reduce bubble air and be easier to paste; leave no residue when removed
This SIZE is designed for MacBook Pro (13-inch, 2016 2017 2018 2019, 2020 Two / Four Thunderbolt 3 Ports). (Model A2159/A1706/A1708, with or w/out Touch Bar). Not for early versions