Arc'teryx PRO Cold WX Bottom AR | Merino Wool Tactical Base Layer Pants

Cold Weather Performance. Zero Weak Points.

The Arc'teryx PRO Cold WX Bottom AR is a midweight merino wool base layer built for cold-weather operations where temperature regulation, moisture control, and durability matter. Designed for professional use, it combines the natural performance of merino wool with nylon core spun technology for added strength in demanding environments.

Constructed from ABMT 180gsm merino wool blend, this base layer delivers warmth without bulk while staying breathable under load. It actively wicks moisture away from the skin, helping maintain thermal efficiency during movement, and retains warmth even when wet.

Built for mobility, the gusseted crotch design allows full range of motion whether you are moving fast, working in confined spaces, or layered under full kit. Lightweight and packable, it integrates easily into any cold-weather layering system.

If you are searching for Arc'teryx base layer pants, merino wool tactical base layer, cold weather military base layer, or moisture wicking thermal pants, this is a top-tier option built for real-world conditions.

Why We Love the Arc'teryx PRO Cold WX Bottom AR:

It does exactly what a base layer should do. Keeps you warm, stays dry, and never slows you down.

Key Features of the Arc'teryx PRO Cold WX Bottom AR:

• ABMT 180gsm merino wool blend for warmth and breathability
• Nylon core spun construction for increased durability
• Moisture wicking performance to regulate body temperature
• Retains warmth even when wet
• Natural odor resistance from merino wool
• Gusseted crotch for unrestricted movement
• Lightweight and packable for layering systems
• Designed for cold weather operational use

Materials & Construction

• Fabric: ABMT 180gsm Nylon Core Spun Merino Wool
• Fabric origin: Australia
• Dye origin: Australia
• Made in El Salvador

Care Instructions

• Machine wash gentle, low temperature
• Tumble dry low permanent press
• Do not bleach
• Do not dry clean or iron
• Use wool detergent only
• Wash dark colors separately
• Do not use fabric softener
• Do not wring or leave wet

Size + Fit: