FletchVR is a project consisting of a carrier board for the Wemos D1 mini, BMI160, TP4056, and some assorted diodes and resistors, alongside a matching Snap-fit enclosure.
Figure 1: FletchVR PCB (revision 1.2)
The PCB and Schematic files are exported from easyEDA using it's format. By importing the files into easyEDA, you can export to Altium Designer, to DXF, and more.
As for the enclosure, the file provided is in the Fusion360 format.
Figure 2: Enclosure complete with lid