Icebreaker 200 Oasis Short Sleeve Crew Base Layer T-Shirt - Gritstone Heather, Men's M

The Icebreaker 200 Oasis S/S Crewe stands apart from synthetic base layers by using pure merino wool to deliver natural temperature regulation, odor resistance, and next-to-skin softness. It is the original go-anywhere, do-anything merino tee for year-round comfort.

Highlights

• 100% merino wool fabric (200 g/m²) for breathable warmth without overheating
• Naturally odor-resistant — wear it multiple times between washes
• Moisture-wicking and fast-drying to keep you dry during high-output activities
• Offset shoulder seams and flatlock stitching prevent chafing under pack straps
• Slim fit with crew neck and short sleeves for easy layering
• ZQ-certified merino ensures ethical farming and environmental responsibility

In daily use

From alpine hikes to city commutes, this base layer adapts to your body temperature. The lightweight 200 g/m² merino knit insulates when it's cool and releases excess heat when you work up a sweat. Its natural crimp traps air for warmth, while the fiber's hydrophilic core pulls moisture away from the skin and evaporates it quickly. The result: you stay comfortable across a wide range of conditions without clamminess or chill. The slim cut hugs the torso without restriction, making it an ideal first layer under midlayers or a standalone tee in milder weather. Flatlock seams lie smooth against the skin, and the offset shoulder design avoids pressure points under backpack straps. Merino's inherent odor resistance means the shirt stays fresh even after repeated wear, reducing the need for frequent washing on multi-day trips.

Full specifications

• Material: 100% Merino Wool
• Fabric weight: 200 g/m²
• Sleeve length: Short sleeve
• Neckline: Crew neck
• Fit: Slim
• Gender: Men's
• Size: M
• Colour: Gritstone Heather
• Key features: Odor-resistant, moisture-wicking, breathable, temperature regulating
• Seam construction: Flatlock seams
• Shoulder seams: Offset shoulder seams
• Sustainability certification: ZQ Merino
• Recommended use: Hiking, skiing, running, everyday wear
• Seasonality: All-season
• Care: Machine wash cold (30°C), line dry in shade

Final note

Icebreaker's 200 Oasis is a benchmark merino base layer — versatile, durable, and naturally high-performing. It earns its place in any active wardrobe.