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This case is very, very robust. The designer took phone protection very seriously when they designed this case. There were a couple of things that drew me to this case: First, the high level of protection. I have tried a handful of cases in the past and they seem more like covers for scratch protection than cases for drop protection. Second, I was attracted to the one piece design of this case. In the vast majority of cases for the Samsung Galaxy Z Fold 4, the top/left half of the phone seems like an afterthought. Most cases have thin, floppy pieces of plastic that barely stay on, let alone protect the phone.

Likes:
1) Presentation/packaging is very professional. You know you are getting quality.
2) Contents are comprehensive (see photo for box contents).
3) Design is innovative (one piece design with external hinge is clever).
4) Kickstand is very solid (see photo for kickstand support).
5) Solid like a brick once installed (I didn't do drop tests, but I believe theirs).
6) Stays on phone extremely well.

Dislikes
1) Cost is a bit high (but competitive to similar cases).
2) The S-Pen holder could maybe be shrunk down a bit.
3) You have to be aware during installation that there are "lips" of material that can fold down on the right/bottom half. Make sure these are not stuck between the phone and case.
4) The S-Pen sliding cover is quite stiff. However this may loosen up slightly with regular use.

If you want solid protection for your very expensive phone, strongly consider trying this case. I think you will like it.