Merino Boxer Brief Men's

$36.5 ~~$50~~ In stock

Category: Men's Baselayers

Ditch the cotton and go with these. A Smartwool best seller.

Details

88% Merino Wool, 12% Nylon fabric for the perfect balance of comfort and durability in a lightweight wool baselayer
Core Spun Merino fibers wrapped around a nylon core that adds durability while maintaining soft Merino next-to-skin comfort
Merino-lined 1.5" wide elastic waistband
Fly front
4.75" inseam (size medium)
Slim fit
Flatlock seam construction for comfort
Odor resistance
Machine washable and dryable
3.2 oz

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Hannah ★★★★★ Oct 22, 2026

The 88% merino nylon blend is perfect—it keeps me cool during hikes yet warm enough for chilly mornings. The fabric holds its shape wash after wash, and I’ve finally stopped sweating through my pants. Best underwear I’ve bought in years.

Owen ★★★★★ Oct 18, 2026

Finally, a pair of boxer briefs that doesn't make me feel clammy after a long walk—the merino wool blend breathes so much better than cotton. The fabric is soft against the skin but feels sturdy enough to hold up wash after wash.

Leo K. ★★★★☆ Oct 21, 2026

The merino wool is genuinely soft against the skin, and the 12% nylon blend gives it just enough stretch to stay put during a long walk. I’ve worn them for a few days now, and the only small thing is the waistband feels a tiny bit snug after a full day. Still, they breathe way better than my old cot