Can you use a screen protector with the Catalyst Waterproof case?

A thin screen protector could work

If you're really adamant about using a screen protector with the Catalyst Waterproof Case, you'll need to ensure it's really thin to achieve the best results.

A film screen protector is likely thin enough that it won't cause any problems, but tempered glass screen protectors vary in thickness a lot. If you want a glass screen protector, get the thinnest one you can find and you probably won't have any issues. We recommend the Maxboost tempered glass screen protector, which is only 0.25mm thick and has an open-edge design so that it's compatible with a lot of phones.

The important thing is if you want the Catalyst case to do its job properly, it needs to fit snug on your phone. If it feels like it doesn't want to fit with a screen protector on, don't force it; remove your screen protector and try something else.

Do you need a screen protector with the Catalyst Waterproof Case?

It's important to remember that the Catalyst Waterproof Case is a heavy duty case on its own. It's drop-protected to a height of 6.6 feet and it already comes with a protective layer that covers the screen. The case should be more than enough protection to get by your average day-to-day routine, and the built-in screen cover does a pretty good job of preventing scratches on the screen.