RhinoShield CrashGuard Bumper Case ($25)
If you don't want to cover up this fancy phone with a big bulky case, but still want protection, get a bumper case.
The RhinoShield Crashbuard Bumper is exactly what you need. This doesn't cover the back of the phone at all, and is simply a durable bumper shell that wraps around the entire edge of the Galaxy S9.
They use a durable ShockSpread polymer material that absorbs impacts up to 11ft. Meaning it passes military-grade ratings for drop-protection. That's pretty impressive all things considered. This is a minimal case for the minimalist in you. Or, get the SOLIDSUIT case.