If you are looking for carbon fiber case for your Samsung Galaxy Z Fold 4 phone. You might want to take a look at the slim & thin carbon case from Kaisenkec. This case fits perfectly on your Samsung Galaxy Z Fold 4. All openings and cut outs for openings on the Galaxy Z Fold 4 are aligned perfectly, basically fits like a glove on your Galaxy Z Fold 4! If you are interested on picking up the Kaisenkec slim carbon case, I will put a link below so you can take a look on Amazon. This case will also give you better grip so your Galaxy Z Fold 4 won't be slipping out of your hands... though you still have to be careful because no matter what case you have, your phone can slip out depending on the situation.
Amazon Link: https://www.amazon.com/gp/product/B0B...