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Phase AR Zip Neck LS


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Phase AR Zip Neck LS Women's Lightly insulated, zip-neck base layer, designed for use during aerobic activities in cooler conditions. Phase Series: Moisture wicking base layer | AR: All-Round.

Lightly insulated, zip-neck base layer, designed for use during aerobic activities in cooler conditions. Phase Series: Moisture wicking base layer | AR: All-Round.

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XS, S, M, L, XL
145 g / 5.1 oz
Sizing Chart: 
Gender Equivalent Product:


Mid-weight, zip neck base layer appropriate for cooler temperatures, high-output activities. Hybrid mapping of Phasic™ AR (in the body) and Phasic™ SL (in the underarm area) fabrics in addition to the flatlock construction and next-to-skin fit, improves comfort, eliminates excess bulk and rapidly transfers moisture for efficient evaporation. Benefits include improved temperature regulation and layering.

Learn More About This Product

Arc'teryx Fit Guide - Next to Skin Fit

These snugly-fitting garments are made with stretch fabrics to fit next to the skin to enhance moisture management and thermal efficiency. Used for base layers which integrate well with Expedition, Trim, Athletic and Relaxed Fit.

To find out how to calculate your body measurements, view our Sizing Charts:

Men's Tops | Men's Bottoms
Women's Tops | Women's Bottoms


Moisture wicking base layer for interval activities.

AR | All Around

Provides high performance & weather protection and highlights a range of features to give All Around versatility in multiple activities.

Full Feature List

Technical Features
  • Moisture-wicking
  • Breathable
  • Lightweight
  • Quick-drying
  • Odour-control fabric treatment
  • Hydrophobic materials will not absorb water
  • Mechanical stretch textile for unrestricted mobility
  • Anatomical shaping for fit and comfort
  • Gusseted underarms
Collar Configuration
  • Laminated chin guard
Zippers & Fly Configuration
  • Quick-pull 1/2 length zip for easy venting
Cuff & Sleeves Configuration
  • Long sleeves
Logos & Label Configuration
  • Non-chafing label


  • Phasic™ SL—70% polyester, 30% polypropylene, UPF 25, 98 g/m². Reduced yarn size of polypropylene lends soft touch to 100% hydrophobic jersey knit textile with mechanical stretch. Composed of multidimensional polyester yarns that wick moisture laterally to dry quickly. Very light weight with a smooth outer face that slides easily under other layers.
  • Phasic™ AR—87% polyester, 13% polypropylene, UPF 50+, 145 g/m². Double knit textile with mechanical stretch composed of multi-dimensional polyester yarns that wick moisture laterally to dry quickly. The smooth outer face is durably pill resistant and a lightly lofted interior adds light insulation.


  • Machine wash in cold water.
  • Hang to dry.
  • Do not use fabric softener.
  • Do not iron.


  • Best in Test - Klikk (Norway)
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