We’ve discovered that the bear has ventilation issues. I was worried about the heat buildup in the mask before I left, but it turns out that is only part of the problem. We have more of an issue with fogging in the eyes. If you’ll recall, the eyes are made of sunglasses and the mask, despite my cutting away for the fiberglass, is still a very closed environment. There’s nowhere for the humidity that the breath carries to go because the fur is too thick to vent.
Next I’ll replace the lower jaw with a foam one, which should allow for more ventilation.