Icebreaker Men's Merino 260 Tech Long Sleeve Half Zip
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Warmth and comfort for winter’s coldest adventures
The Icebreaker Men’s Merino 260 Tech Long Sleeve Half Zip Thermal Top is a heavyweight merino wool base layer designed for cold weather activities like skiing, snowshoeing and winter hiking. Made from 100% merino wool, it offers natural warmth, softness and odour resistance. The gusseted underarms and backward set side seams enhance mobility and reduce friction, while the half zip design allows for quick ventilation. Ideal for layering, this top provides reliable insulation and comfort in the coldest conditions.
Features
- 100% merino wool for warmth, softness and odour resistance
- Half zip design for adjustable ventilation
- Gusseted underarms for mobility and comfort
- Offset shoulder seams to reduce friction under pack straps
- Flatlock seams for reduced chafing
- Backward set side seams to prevent friction
- Heavyweight 260 merino fabric for cold weather
Specifications
- Claimed Weight: 320g (M)
- Material: 100% merino wool (exclusive of decoration)
Icebreaker Men's Tops and Jackets Size Guide
How To Measure Your Size

Be sure to keep the tape level, and not too tight. Then use the chart as a guide, but allow for some variance based on how you prefer the garment to fit.
CHEST: Measure the full circumference of your chest just below your armpits.
Size Chart
| Size | Chest (cm) |
|---|---|
| Small | 83 - 91 |
| Medium | 91 - 99 |
| Large | 99 - 107 |
| X-Large | 107 - 115 |
| XX-Large | 115 - 123 |
| XXX-Large | 123 - 133 |
Measurements refer to body size, not garment dimensions.