Traditional thermal underwear does one thing systematically: It keeps the body enveloped in its own heat. But what can be a pleasant feeling at one point can lead quickly to overheating.
AirGuides work like spacers and borders along the AirConditioning Channel®. The AirConditioning Channel® must be combined with the AirGuides for winter use. The AirGuides maintain space between heavy winter upper body garments and a pack, whilst ensuring a highly effective quantity and flow of fresh air through the AirConditioning Channel®.