Phone case for a iPhone 5. Tested to fit.
These are printed with a laser sintered plastic and should be sealed for best longevity. Basically they are porous by nature. I use Future floor shine by Pledge, however, any sealer for plastic will work. They need to be sealed or they will pick up dirt or in the case of dyed colors (anything but white), they will rub off.
If you order something offered other than the White Strong and Flexible or the Black your print will be polished at Shapeways. The polishing process removes material and it might effect fit. Most are still fine. In extreme situations you will need to add a small coat of silicone or throw a business card in between the case and the phone to eliminate shifting.