Hands down the best 3D printable phone case for your iPhone 13 pro. I have been working on the design since the release of the phone, slowly tweaking it to get the fit just right. 3D Printing Settings: Infill: 100% Top/Bottom Layers: 3 Perimeter Shells: 2 Support: Yes - it is needed on the inside overhang - consult picture Nozzle Diameter: 0.35 mm Extrusion Width: 0.4 mm Layer Height 0.2 mm