Polartec Alpha

Polartec Alpha



There are SO many reviews it was hard to choose. Here's a video that explains it well.






Polartec® Alpha® Insulation

Polartec Alpha Style 4409: $15.00 USD
Polartec Alpha Direct Style 4004: $17.00 USD
Polartec Alpha Direct Style 4008: $18.00 USD
Polartec Alpha Style 4402: $17.00 USD
Polartec Alpha Style 4403: $18.00 USD

You will find our shopping cart near the bottom of each fabric page.

Polartec® Alpha® was originally developed for the U.S. Special Forces when they required a more advanced insulating material in their combat uniforms. This fabric is a new technology with active insulation that regulates core body temperatures during both dynamic and static activities. This latest advancement in adaptable breathability helps eliminate the need of shedding or adding layers while on the move.

Adjusting or completely shedding layers to release excess heat and moisture vapor is not always a viable option during activities. Pit-zips and vents have traditionally helped to balance airflow and warmth in micro-climates, but they leave surface areas exposed to the elements in the process. Polartec® Alpha® is the first high performance fabric to materialize the concept of active insulation.  It's hydrophobic, so it won't absorb moisture even if you start to sweat.

By placing patented low density fibers between air permeable woven layers we created a more efficient fabric for regulating warmth and transferring moisture. This advancement increases thermal adaptability in changing conditions and different phases of physical activity.

Watch this video to find out how Polartec® Alpha® works!  https://youtu.be/svEDqcpa-Wg

 Graphic showing technical properties of Polartec Alpha insulation

We currently offer Alpha® in a lightweight black, intended to be used as a sandwich layer, with a water repellent face fabric and a light liner.  You can choose whatever fabrics you like, but we recommend one of the shell fabrics such as Neoshell, or one of the very water repellent breathables such as NIKE Hi-Vent...both of which we have on our Shell Page.  For a liner, use either a light breathable or for moisture-wicking, choose Polartec Powerdry or Power Grid.  Both do an amazing job. We sell those too, of course!   There is no limit to the combinations you can use.


We also offer Alpha® Direct, which doesn't need a liner!  It's an all in one.  Here's a video link showing a well known manufacturers jacket that features Alpha® Direct: HERE


Fabric swatches for Polartec Alpha and Alpha Direct insulation in various weights in white and black.

Polartec® Alpha®, Style 4409, Black, 60" 

3.3 ounces (95 grams)  $15/yd


Polartec® Alpha® Direct, Style 4004, Shark, 58"

2.5 ounces/sqyd (85 gsm)  $17/yd


Polartec® Alpha® Direct, Style 4008, Black, 60" 

4.0 ounces/sqyd (136 gsm)  $18/yd


Polartec® Alpha®, Style 4402, White, 62"

2.9 ounces/sqyd (98 gsm)  $17/yd


Polartec® Alpha®, Style 4403, White, 62"

2.6 ounces/sqyd (88 gsm)  $18/yd



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