Active Boxer Brief Men's F25

$23.45 ~~$35~~ In stock

A lightweight boxer brief from Smartwool made with a Merino/Polyester Blend Fabric that combines the temperature regulation and odor resistance of Merino with the durability and quicker drying time of Polyester. Loose those old white cotton briefs and grab a pair of two of these.

Details

56% Merino Wool, 44% Recycled Polyester Fabric for the perfect balance of comfort and durability in a lightweight wool baselayer
Double front panel for extra support
Wide elastic waistband
6" inseam (size medium)
Slim fit
Flatlock seam construction for comfort
Odor resistance
Machine washable and dryable

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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 (5.0 / 5 · 5 reviews)

Robert ★★★★★ Oct 22, 2026

I've been wearing these for a week and the merino blend really keeps me cool during my morning runs. The waistband doesn't roll up at all, which is a huge improvement over my old pairs.

Benjamin ★★★★★ Oct 21, 2026

Finally, a pair of boxers that don’t feel swampy after a long hike—the merino blend keeps me cool and dry without that weird synthetic cling. The waistband also lies flat under my pants, which is a nice bonus.

Brian M. ★★★★★ Oct 20, 2026

I've been wearing these on my morning runs and they stay in place without riding up, plus the fabric dries noticeably faster than my old cotton pairs. The temperature regulation is solid too—no overheating even when I'm pushing hard.