AirTrim Cold Weather Mask Replaceable Filters (2-Packs) Type:Racing2 Guru made this klister to

Guru made this klister to glide much better than other warm klisters to make it stand out

Heavy breathing in cold temperatures or low humidity (desert climates or high-altitude) can be uncomfortable or damaging to your airways

A classic for cross-country skier's winter attire

Let wax remover sit for 20 seconds to let it do It's work

non-digital thermometer for measuring snow and air temperatures

AirTrim Cold Weather Mask Replaceable Filters (2-Packs) Type:Racing2 Guru made this klister toFind the right amount of filtering for your training racing effort level and comfort. These two pack filters allow you to switch out filters from your AirTrim mask so you can breathe comfortably with your preferred heating vs. airflow level. Filters come with five levels of filtering. The rolled corrugated plastic in the filters is coloured white or blue. White filtering plastic offers more heating and less airflow, while blue plastic filtering