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The Vortex Half-Zip is made for the alpine approach. Appropriate as either a cold weather base-layer or all-season mid-layer, the Vortex offers extreme adaptability in a lightweight package. Warm but breathable Polartec® Power Grid™ offers moisture-wicking insulation in a lightweight package.  With reinforcements in high-abrasion areas for extended durability and sleek bicep pockets to keep essential gear close to hand, the Vortex is ready for an extended tour of duty in a range of environments.


  • Polartec® Power Grid™

  • 93% polyester, 7% Elastane

  • Active

  • Baselayer

  • Jersey face with sheared grid backing

Weight for size in Medium
  • Weight 7.9 oz (224gm)

  • UPF 15

  • Polygiene odor control technology prevents the growth of bacteria and fungi using low concentrations of recycled silver salt.

  • Made with Recycled Polyester

  • Power Grid is designed to keep skin dry when you sweat - The Power Grid construction wicks away 30% more moisture than single layer fabrics.

Pocket Configuration
  • 2 bicep pockets

Cuff and Sleeve Configuration
  • Thumbhole  

Care Instructions: Easy Care fabric
  • Machine Wash Cold

  • No Bleach

  • Do Not Iron

  • Tumble Dry Low or Line Dry

Made in USA

  • Adaptive Insulation

    Made with a unique grid construction that maximizes breathability and wicking, Polartec® Power Grid™ provides warmth without compromising on weight or compressibility. This makes it ideal in a lightweight insulating layer for active use. The Vortex combines this with thumb-hole cuffs and a deep zipper to support a wide range of conditions and activities.

  • Packable

    Whether you're on the mountain or in the city, the Vortex won't weigh you down. Weighing in at 7.9 ounces and compressible to the size of a water bottle, the Vortex can be stashed in your pack, ready to provide critical warmth when needed.

  • Comfort in Motion

    With inherent stretch and thumb-hole cuffs, the Vortex will keep you covered and unrestricted during dynamic movement. A sleek outer face ensures comfortable layering under a shell in inclement weather.

  • Versatile Styling

    Equally at home on the mountain and in the city, the Vortex offers a slim, tailored fit with subtle nylon accents.

  • Ambidextrous Storage

    Dual bicep pockets provide streamlined storage that remains accessible under a rucksack, body armor, or harness.

Customer Stories

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