Read the Amazonian reviews. I have had cases like these, and the clip at the top falls apart when opened, making them really cumbersome to install / remove your phone from them. I suppose that if you left the phone in them full time, this would not be a problem. I’ll leave my phone out of them full time instead.
I’ve used bags like these before and never had a major problem with them falling apart. So either every one of those reviewers is incredibly rough on these or the build quality is significantly worse than usual.
You can get one of these that doesn’t suck for around $10. Not sure it’s worth getting 3 that do suck for $15 or $20, depending on VMP.
You can dismiss reviews about not being able to use the phone in it while underwater, like diving and taking photos. Modern capacitive touch screens are going to detect anywhere there is water within a couple millimeters as a touch. I’d consider them more something to keep a phone safe if you go on a water ride and similar.