update: 12/30/16 I take it back, this case fits very well with rigid back piece and Semi flex front. the newest picture is wood PLA and white TPU 95A and it looks an fits perfect!
this is a case for the Moto Z Phone with the Incipio battery pack mod. the origional phone case that I designed for just the phone is found here:
this case, In my opinion is not as good as the original for fitment issues, only because the shape of the new back piece. but it works well if you print the back in rigid PLA or ABS, and print the front piece in either Semi-Flex or TPU 95A (flexible polyurethane). the case on the left in the photos is PLA back and TPU front. Whereas the case on the right is NinjaFlex TPE back and ABS front. if anything, for this case, stay away from the NinjaFlex, its too flexible! Use TPU 95A, and if you haven't use it before, its easier to print than NinjaFlex and its much cheaper!!! still I don't go over 15 mm/s for TPU. Scale both pieces of the model to 101% in the X and Y direction for proper fitment.