Polartec Fabrics

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NeoShell Power Stretch


Polartec NeoShell


Waterproof technology has remained about the same since the very first hard shell. Breathability is achieved through diffusion: moisture and heat create enough pressure that moisture vapor finally passes through the fabric. Soft shells trade waterproofness for greater breathability by making use of convection: a constant exchange of air allows more moisture vapor to escape. 

Now, Polartec® NeoShell® delivers the best of both worlds. Its exclusive membrane allows air to pull moisture vapor out – even at extremely low levels of pressure. So it helps keep you drier during high-exertion activities. Polartec NeoShell is the first-ever fabric to enable peak performance in any condition. It’s time to be liberated.
Polartec NeoShell Technology

Polartec NeoShell Technical Animation


More airflow. Better breathability.

Most hard shell fabrics allow zero airflow. Even when compared to the best waterproof/breathable fabrics, Polartec® NeoShell® has over 2X the airflow. This controlled exchange of air allows the process of convection to increase the transfer of moisture vapor. You won’t notice windchill. But you will feel drier.

Polartec NeoShell Air Permeability

The standard for waterproof.

For a fabric to be considered waterproof, it must withstand the industry’s requirement in hydrostatic head tests of 10,000mm of water pressure. Anything beyond this point is unnecessary as it won’t keep you any drier. You’re dry at 10,000mm. You won’t stay drier with a higher number. But you’ll likely be wetter from sweat.

Polartec NeoShell Resistance to Water Penetration

Dynamic testing for a dynamic world.

The airflow found in all conventional waterproof/breathables is close to zero whether you’re active or not. That’s why claims for these garments are based on static tests like RET and MVTR. But the claims become irrelevant the second you walk outside. Breathability is more accurately measured with Dynamic Breathability Testing, which accounts for real-world conditions like wind and movement. Polartec® NeoShell,® with its constant 2-way exchange of air, is 100% more breathable than the best waterproof/breathable shells on the market in active conditions. Ultimately, the test that matters the most is the one conducted in the field. Which is why we enlisted top athletes to help test and develop Polartec® NeoShell® from day one.

Polartec Neoshell Dynamic Breathability

Polartec Power Stretch

Clothing that moves with you.

Polartec® Power Stretch® fabrics feature body-hugging 4-way stretch and are very breathable. They keep you dry when you sweat and provide warmth without weight. These are the most versatile outdoor and fitness clothing fabrics available today. Many of the fabrics feature a proprietary construction with two unique surfaces: the durable, smooth outer layer is wind- and abrasion-resistant; the soft inner layer pulls moisture away from your skin keeping you dry, warm and comfortable. Other fabrics in the series feature compression stretch which can improve performance and reduces the chance of certain types of stop-go injuries. Climbing, running—even taking on an Ironman competition—are easier when your clothing doesn't inhibit freedom of movement.

How does it work?

Moisture and high relative humidity next to the skin cause discomfort. Polartec® Power Stretch® keeps the skin dry through three complementary mechanisms:

  • The fabric is highly breathable and does not restrict the movement of moisture vapor.
  • "Touch points" on the fabric inner surface draw off the sweat. Sweat is wicked off the skin to the outside of the fabric, where it spreads rapidly for evaporation.
  • When the sweat reaches the outside of the fabric, it spreads out to many times its original surface area, enabling it to dry at least 2 times faster than cotton.

Technical Highlights

  • 4-way stretch
  • Keeps your skin dry when you sweat
  • Highly breathable
  • Wind and abrasion resistant
  • Comfortable next-to-skin
  • Machine washable