Two lenscaps connected by a stretchable connection, so no matter what IPD you have your pico4 set to, it will still fit and protect your display from sunlight focusing through the lenses and damage the displays.
Because they are connected its harder to loose a single cap like with the untethered version.
Print in TPU!
You can try in PLA but no guarantee given that it will fit! (most likely not!) That for I added the covers without the stretchable connection. You probably have to print it 2-3%larger.
The author marked this model as their own original creation.