
Description
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Fabric

Fabric Story
Alpha-D 90 is a midweight (90gsm) insulation with exceptional breathability, allowing for world class warmth without overheating. Alpha was originally designed by Polartec for US Special Forces to use in cold wet conditions, but we find that when used on it’s own it makes some of the most versatile active use insulation possible.
When worn as a top layer it provides almost completely unrestricted airflow. When in motion or in breezy conditions it barely insulates at all, but when worn under a shell or in calm, still, environments it packs a huge amount of exceptionally soft and cozy warmth. Combined with its light weight and easy packability it makes for an amazing layer for outdoor activities in above freezing conditions. It’s super nice and cozy indoors too, and below freezing it makes an excellent layering piece.
Fiber Content
100%Polyester
Fabric Origin
Knit in USA
Fabric Weight
90GSM
Fabric Construction
Split knit
Fabric Water Resistance
None
Breathability
Extremely High


Fit
Fidelity
Runs large, we recommend sizing down
Size Chart
in Inches | Measured Flat


Form
Made in
Manhattan
Hardware
- Shockcord barrel adjust
- Heat shrunk shockcord end cap
Construction Details
- Shockcord hem
- Ultrasuede 24mm label on right sleeve
Style Number
K571
Revision History
- December 2025:
- Initial release
- Name: Alpha-D Cinchbottom
- Colors: Snowdrift


Care
Washing
- Machine wash warm
- Do not bleach
Drying
Tumble dry low
Dry Cleaning
Do not dry clean
Ironing
Do not iron

Photography Credits
Photos by Jon-Paul Rodriguez





















