Men's Merino 200 Oasis Thermal Leggings wFly

Men's Merino 200 Oasis Thermal Leggings wFly - View 3

Men's Merino 200 Oasis Thermal Leggings wFly - View 4

Men's Merino 200 Oasis Thermal Leggings wFly - View 5

$78 ~~$120~~ In stock

Setting the standard for all others to follow, the 200 Oasis Leggings with Fly are icebreaker's comfortable base layer bottoms that make the perfect foundation for your everyday year-round layering system.

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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)

Harper ★★★★★ Oct 20, 2026

Finally, a pair of thermal leggings with a proper fly that actually works for quick bathroom breaks. The merino wool is soft against the skin and regulates temperature perfectly during my morning runs. Exactly what I needed for reliable all-season layering.

Julian V. ★★★★★ Oct 17, 2026

These are a game-changer for winter hiking—the flatlock seams don't chafe under my pack straps. I can already tell the merino will keep me comfortable on multi-day trips.

Harper Z. ★★★★★ Oct 13, 2026

Wore these under jeans on a 20-degree ski day and never once felt clammy, which is rare for me. The fly is a small thing but makes bathroom breaks way less of a hassle. Leggings stayed put all day, no bunching at the knees.