Summary

The ski goggle's thin foam ventilation covers tend to demolish over the time. Here's the fix.

Ventilation cover is printed with PLA. After the print separate a part from the bed. Heat the bed with part to 70C. This allows you the bend a needed twist to seat part even. (Repeat the heating if needed)

Use slicer's mirror function to print on the other side.

Added the bottom ventilate as well.