Icebreaker
200 Oasis LS Crew Top - Men's

4.7 out of 5 stars

100 Reviews

Current price: $57.75 Original price: $105.00

45% off

Color:Topaz/Undyed/S

Topaz/Undyed/S

Size:

Size Chart

SMXL

Quantity

200 Oasis LS Crew Top delivers breathable merino warmth for year-round layering

What Our Gearhead® Experts Are Saying:

"This is one of those base layers you end up wearing year-round. The 200-weight merino is warm on cold mornings, but it breathes incredibly well when I’m working hard. The seams are thoughtfully placed so they don’t rub under a pack, and it never holds odor—even after big days on the skintrack."

We love how the Icebreaker 200 Oasis LS Crew Top brings dependable comfort to every season. Made from 100% merino wool, it naturally regulates temperature—keeping us warm when the weather turns cold and cool when we start moving. The soft merino jersey feels great next to skin, offering breathable, odor-resistant performance that excels during long days in the mountains and everyday adventures alike.

Thoughtful construction makes the Oasis even better. Gusseted underarms support easy movement, offset and flatlock seams minimize pack rub, and a drop-tail hem adds coverage when we’re reaching, bending, or layering up. Whether we’re ski touring at dawn, hiking crisp trails, or traveling light, this top delivers the comfort and reliability we want in a true do-everything base layer.

Details

100% merino wool offers breathable, temperature-regulating performance
Soft 200-weight fabric balances warmth and versatility for year-round use
Naturally odor resistant for multi-day wear and travel
Gusseted underarms enhance mobility on active pursuits
Offset and flatlock seams reduce friction from packs and layers
Drop-tail hem increases coverage for dynamic movement
Ideal for skiing, hiking, layering, and everyday comfort
Item #ICE00W8

Responsible Collection: Responsibly Sourced
Material: 100% Merino Wool
Insulation Weight: 200 (lightweight)
Fit: slim
Center Back Length: 29.75in
Style: crew
Anti-Odor: Merino
Claimed Weight: [medium] 7.5oz
Manufacturer Warranty: 1 year

Reviews

Q&A

Overall Rating

4.5 based on 100 ratings

Review Summary

1 Stars - 1 reviews

2 Stars - 4 reviews

3 Stars - 3 reviews

4 Stars - 8 reviews

5 Stars - 84 reviews

Fits Slightly Small

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Here's what customers have to say

The Icebreaker Merino 200 Oasis Long Sleeve Crewe Thermal Top is a versatile base layer that provides warmth, comfort, and breathability. The soft, non-itchy merino wool material regulates body temperature well, keeping the wearer warm in cold conditions and cool in warmer weather. The durable construction holds up well even after extensive use and washing. The shirt effectively wicks moisture and prevents odors, allowing it to be worn for multiple days without needing to be washed. The true to size fit provides a snug, form-fitting feel without being too restrictive.

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2 out of 5 stars

March 13, 2026

Sizing is for shorter people

I'm a medium in most clothing. 5ft 11in and about 160-165lbs. This shirt is far too short in sleeves for anything active and the body was a bit short as well. The chest and stomach sizing was spot on so I wouldn't want to size up. Build quality looked good and the material thickness was just what I wanted. Overall I'm disappointed. For someone 5'8/9" ish, this would be great

Daniel M