It’s wool 😍
"Haven’t put them on the road yet, but seem well made and comfortable. These have the medial seam in the seat, FYI. And it’s Arc’teryx so I have very little doubt they’ll perform well."



High-Performance Cold-Weather Base Layer for Maximum Comfort
Designed for elite military, law enforcement, and outdoor professionals, the Arc'teryx Cold WX Boxer AR - Wool provides unmatched warmth, moisture control, and comfort in cold environments. Crafted from high-quality Merino wool, these boxers offer natural insulation, breathability, and odor resistance, making them ideal for extended missions, long-range patrols, and demanding outdoor conditions.
The Arc'teryx Cold WX Boxer AR - Wool is the ultimate base layer for those who operate in extreme conditions. Whether you're on a long-range mission, outdoor expedition, or working in frigid environments, these boxers provide next-level comfort, warmth, and performance, keeping you focused and ready for anything.
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Overall rating: 4.6 / 5 from 5 reviews.
Review topics: [].
"Haven’t put them on the road yet, but seem well made and comfortable. These have the medial seam in the seat, FYI. And it’s Arc’teryx so I have very little doubt they’ll perform well."
"Best boxers I have ever owned, I use them for patrol and my days are way better"
"Soft, warm, fast drying, reduces odor."
"Had been trying to get these for awhile, they were not in stock whenever I’d check for them. Now I have them and I’m underwhelmed. Thought they would be a heavy knit. Seem to be well made, hopefully last as long as the Ibex boxer briefs they’re replacing. They are not as comfortable as the Ibex. Accteryx Merino wool tends to not be as soft as most other merino garment I own."
"Great for layering and wicking and for me I needed some non cotton boxers for when I’m exercising or outdoors camping especially winter camping."