Stasis Jacket

Evolutionary Balance
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Regular price $265.00
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Overview

Equilibrium established the platform.

Stasis refines it.

The Stasis Jacket is a lightweight, highly breathable insulated midlayer engineered for dynamic environments. Built around mapped Polartec Alpha insulation, it protects core temperature without forcing the traditional trade off between warmth and breathability.

Insulation is strategically distributed to match the body’s needs. The torso utilizes 64 g Alpha to retain heat at the core. Sleeves are insulated with 51 g Alpha to reduce bulk and preserve mobility. Unlined underarm and side panels function as exhaust zones, allowing excess heat to escape during movement. The result is a jacket that can remain on across a broad temperature range without constant adjustment.

A lightweight 30 denier nylon shell with a C0 water resistant finish blocks wind and sheds light precipitation while remaining compressible and packable. The stretch liner layers cleanly over base layers and under shells, supporting seamless integration into a larger system.

Streamlined storage reduces visual noise without sacrificing capability. Innovative dual stacked front pockets separate secured carry from natural hand placement, with internal attachment points for retention. The wearer’s left internal chest pocket doubles as a stow pocket, compressing the jacket into a compact package sized to fit easily into most water bottle pockets. A reversible slider enables intuitive deployment and repacking.

Set in sleeves, gusseted side panels, wrist gussets, a high coverage collar with chin guard, and a full length internal wind flap complete the architecture.

Stasis blurs the line between everyday insulation and technical mid layer. Worn over a tee, under an overshirt, or beneath a shell, it is engineered to regulate without interruption.

Embrace the Stasis - Remain constant in a variable world.

Specifications

Fit

  • Active

Layering

  • Mid Layer

Patterning

  • Set In Sleeves

  • Edge Stitched

  • Gusseted Side Panel and Underarm

  • Collar with Chin Guard

  • Full Length Wind Flap

  • Internal Chest Pocket doubles as stow pocket When Not In Use

  • Wrist Gusset

  • High Coverage Collar

Materials

  • Shell

    • 90% Nylon, 10% polyurethane 

    • C0 WR

    • 55g/m² (1.6oz/yd²)

    • 30 Denier 

  • Insulation

    • Body:  64 g/m² (1.9oz/yd²)

    • Sleeve: 51 g/m² (1.5oz/yd²)

      • 100% Polyester 

      • Polartec® Alpha®

  • Liner

    • 88% Polyester, 12% Elastane

    • 58 g/m² (1.7oz/yd²)

Weight & Dimensions for Medium

  • Weight : 19.75 oz (560.00 grams)

Pocket Configuration

  • Two On Seam Zippered Hand Pockets with Internal Attachment Points

  • Hand Pockets Split Into Two Compartments

  • Wearers Left Internal chest pocket, doubles as a stow pocket 

Zipper Configuration

  • Full Front Coil Zipper with Chin Flap and Pull Tab

  • Reversible Slider On Internal Stow Pocket

  • All Zippers Are #3 reverse coil HSD® Zippers

Cuff & Sleeve Configuration

  • Set In Sleeves

  • Wrist Gusset

Hem Configuration

  • Clean Finished Hem 

Care Instructions:

Machine Wash Cold 

Gentle Cycle 

Wash Separately 

Do Not Bleach 

Do Not Use Fabric Softener

Tumble Dry Low 

Do Not Iron 

Do Not Dry Clean 

Cut and Sewn in USA

REFINED FORWARD

Equilibrium marked our early commitment to Polartec Alpha®, long before active insulation became industry standard. Stasis advances that lineage, optimizing mapped Alpha® placement and reducing overall mass for greater range and sustained wear in dynamic environments.

Proven early. Perfected forward.

Lightweight by design. Relentless in function.

Beyond Active Insulation

Polartec’s revolutionary Alpha® material, developed alongside US Special Forces is an advanced, breathable insulation technology that works during both rest and dynamic phases in the field.

Polartec® Alpha® active insulation regulates body warmth for optimized comfort during stop-start activities. Tough, yet lightweight, it's lofted fibers, mesh core and hydrophobic qualities make Alpha™ dependable, highly breathable and fast drying.

Innovative Storage

Stasis features new dual stacked front pockets designed to separate secured equipment from natural hand placement without increasing bulk or visual noise. Each low profile zipper opens to two distinct internal zones.

Packable Companion

Designed for mobility and pack efficiency, the Stasis layers cleanly and compresses into confined spaces. The internal chest pocket reverses to form a self contained stow system. Turn it inside out and compress the jacket into the pocket for rapid deployment and recovery.

Collapsible content

WHAT IS Polartec® Alpha™?

Polartec®Alpha™ is an innovative active insulation designed to adapt to changing conditions by effectively regulating heat and moisture. Originally developed for the US Special Forces to effortlessly handle the stop-go conditions of active combat, Polartec®Alpha™ is ideal for outdoor activities by keeping you warm when needed and releasing excess heat during high-exertion activities.

HOW DOES Polartec® Alpha™ WORK?

Polartec®Alpha™uses a lofted fiber structure with a mesh core, allowing warm air retention when needed and enhanced airflow during movement. This active thermal-management system prevents overheating and keeps you comfortable in unpredictable environments.

WHAT IS ACTIVE INSULATION?

Active insulation refers to the dynamic ability of Polartec® Alpha™ to seamlessly insulate the body to regulate heat management during high aerobic output levels while keeping you warm when less active.