Tromping up a mountain to learn about backcountry ski mountaineering racing, host Dr. North gets a real workout. Having just flown in from Hong Kong, Dr. North has no winter gear, so borrows Strafe's Highlands Jacket. The waterproof jacket proves to keep the good doctor warm in 30 degree weather, and as he starts to work up a sweat, he discovers just how important breathability is in a jacket.
The key to staying comfortable is staying dry. While waterproof materials keep water from getting into a jacket, breathable materials allow water to escape from the inside of the jacket. Ideally you want both, and this is what Polartec's Neoshell does. During rigorous activity a person will start sweating to cool themselves, this sweat turns into water vapor inside the jacket. To allow the water vapor to escape, Neoshell has microscopic pores big enough to allow the water vapor to escape, and small enough to keep water out. By allowing the water vapor to escape, Dr. North remains dry inside the jacket, allowing him to stay warm and feeling good!