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A black long-sleeve crewneck athletic base layer shirt shown on a plain white background.
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A man shown from behind wearing a black long-sleeve base layer performance shirt and gray athletic pants against a plain white background.
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Arc'teryx PRO Cold WX LS Shirt AR - Wool Men's

By Arc'teryx
$ 164.00
Color:
Size

Cold Days. Warm Core. Mission On.

The Arc'teryx PRO Cold WX LS Shirt AR - Wool Men's is the foundation of a dependable cold-weather layering system. Built with 180gsm Nylon Core Spun Merino Wool, this durable midweight base layer combines the natural temperature regulation and odor resistance of merino with added nylon strength to stand up to repeated wear in demanding environments.

Designed to keep you comfortable through changing conditions, the fabric efficiently wicks moisture away from your skin to help regulate body temperature while retaining warmth—even when wet. Gusseted underarms provide unrestricted mobility, making it easy to move whether you're wearing a pack, body armor, or additional insulation layers.

When the mission calls for long hours in cold weather, this is the layer you'll want closest to your skin.

Key Features

  • Durable 180gsm Nylon Core Spun Merino Wool construction
  • Naturally regulates body temperature in cold conditions
  • Retains warmth even when wet
  • Moisture-wicking performance keeps you comfortable during high-output activity
  • Naturally odor-resistant merino wool
  • Gusseted underarms for unrestricted mobility
  • Humanely sourced, non-mulesed merino wool
  • PFAS compliant
  • Weight: 225g (7.9 oz)

Why We Love It

A quality base layer can make or break a cold-weather kit, and this one gets it right. The nylon-reinforced merino construction offers the comfort and performance of wool with added durability for repeated field use. It stays warm, manages moisture exceptionally well, and keeps odor under control—whether you're working outside all day or living out of your kit for multiple days.

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