Belkin iPhone 7 Screen Protector
Apple uses Belkin screen protectors in the Apple Store for older iPhone models, and Belkin offers very interesting iPhone 7 and iPhone 8 screen protectors that you can get directly from Apple.
The newest iPhone 7 screen protector, InvisiGlass Ultra, is made with Accessory Glass 2 by Corning. Belkin states that compared to soda-lime glass this screen protector delivers;
This is also very thin and doesn't impact your touch screen sensitivity or the feel of sliding your finger across the glass
Buy the Invisiglass Ultra for $39.95 at Apple.