The DJI goggles 2 comes with a lens protector, which didn't fit in my goggles after I change the foam to a softer one and added diopters. I therefore created a simple lens cover that worked well with the new foam on the goggles.
It can act as a replacement if you lose the original if you are using diopters, or it could work for when you replace the foam as I did.
The print is done assuming you have diopters on. If you need one without diopters just look in my profile.
Print in TPU, flat side down, and it's such a simple design that you don't even need to print slowly.