Airtrim Arctic Wind Cover

thingiverse

In temperatures below -20C, the Airtrim rebreather mask does a great job of conserving heat and moisture that would be lost with your breath. This saves a significant amount of heat over a balaclava, allowing you to spend more time in the cold comfortably. Also, your goggles will never fog up. However the large exposed face of the element allows high winds to strip the heat from the mask, especially when windchills drop into the -50C range. This is a cover to press onto the filter face to redirect the airflow downwards so the wind can't blow directly into it. I used TPU to make it easy to install and remove. The port size is significantly reduced but is still larger than the exhale valve on a regular respirator. I haven't noticed any issues with airflow restriction, but haven't tried it during a high output workout. Let's face it, if you need this cover, you're likely not out there for fun. Coming soon - experiments with repurposing printed Covid respirators into an entire DIY rebreather.