Lightning Knight Tempered Glass 3-Pack
If you're looking for excellent screen protectors for your Pixel 3a XL, several of them, consider Lightning Knight. Also known as LK, this brand makes some of the best screen protectors for newer smartphones. Devices with curves screens like the Pixel 3, Pixel 3a XL, Galaxy S9 and more all work best with LK.
Not only does the LK screen protector fit perfectly, but you get three of them in case one breaks or you mess up the installation. Then, if you somehow manage to go through all three and break your last one, they offer a lifetime warranty and free replacements. All of that for $7 is hard to beat.