Classic All-Season Merino Base Layer Bottom Men's

$72 ~~$100~~ In stock

Category: Men's Baselayers

Awesome lightweight Merino wool base layer from Smartwool. Great next-to-skin comfort in warm or cold conditions.

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 wide elastic waistband
Flatlock seam construction for comfort
Fully Functional Fly
Odor resistance
Slim Fit
Machine washable and dryable

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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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Delivery costs

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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Returning an item

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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 (4.8 / 5 · 5 reviews)

Isabella A. ★★★★★ Oct 22, 2026

I’ve worn these on chilly morning hikes and they keep me warm without any itch, plus the nylon in the blend makes them tough enough for frequent washings. The fit is snug but not restrictive, and they’ve held their shape after several wears.

Ruby ★★★★★ Oct 21, 2026

The 88% Merino blend feels fantastic against my skin, no itching at all. Wore them for a long hike in 50-degree weather and stayed perfectly comfortable. My only tiny wish is for a slightly thicker fabric for deeper cold, but they work great as a light layer.

Zoe ★★★★★ Oct 20, 2026

Stayed perfectly comfortable on a chilly morning hike and still felt breathable when the sun came out—the merino wool really delivers on temperature regulation.