The head is one of the areas from which you lose the most body heat when exercising, but it is also very sensitive to cold.
Our balaclava is very thin to prevent overheating. The main goal is to stop the wind and prevent heat from dispersing.
The main component allows the excess of heat from escaping; it is breathable

Machine wash at 86°F. Synthetics cycle. Turn the article inside out. Use a minimal amount of laundry detergent. Do not use fabric softener. Line-dry in a warm, ventilated area. Do not tumble dry. Do not dry-clean. Do not bleach. Do not place on a heater to dry.

We have taken the feedback from your user reviews into account in order to rethink the breathable zone, which tended to create fog on your glasses.
We therefore replaced the previous component with holes by one with mesh (a very breathable component). However, when it is very cold, condensation caused by your breathing can still make its way to your glasses if your glasses' anti-fog treatment isn't very efficient, or if you are wearing glasses that aren't designed for sports use