Burton Women's [ak] Helium Stretch Insulated Vest

Active Core Insulation. Ultralight Stretch Breathability & High-Output Packability.

Engineered for intense splitboard uptracks, high-exertion bootpacks, and adaptable shoulder-season layering, the Burton Women’s [ak] Helium Stretch Insulated Vest delivers targeted core warmth, unrestricted 4-way stretch, and exceptional breathability. Purpose-built for active backcountry missions where maintaining core body heat without overheating is critical, this lightweight vest pairs a flexible 20D nylon/spandex shell with low-profile 40g Thermacore® Stretch insulation. It dump excess heat and moisture while keeping your chest and core shielded from freezing ridge winds.

Designed to slide friction-free underneath GORE-TEX shell jackets, the Helium Vest packs down into its own handwarmer pocket when the exertion turns up. With its streamlined slim fit and weather-resistant DWR finish, it serves as an indispensable year-round technical midlayer for touring, hiking, and chilly resort laps.

• 40g Thermacore® Stretch Insulation: Low-bulk active insulation expands and contracts with your body movement, delivering breathability during exertion and warmth at rest.

• Breathable 20D Stretch Nylon Shell: Ultralight 20D plain weave nylon/spandex fabric provides 4-way stretch mobility while allowing excess internal heat to vent during high output.

• Water-Repellent DWR Finish: Eco-conscious DWR coating sheds light rain, snow, and mountain spindrift during outer-layer wear.

• Self-Stowing Packable Design: Compresses effortlessly into its own left zippered handwarmer pocket for space-saving storage in your touring backpack.

• Low-Profile Streamlined Silhouette: Slim technical cut sits flat against the body without bulk, allowing seamless layering under 2L and 3L [ak] shell jackets.

• Rider-Driven Utility Features: Includes a low-profile drawcord hem cinch, zippered chest pocket for essentials, and soft microfleece handwarmer pockets.