Icebreaker 200 Oasis Long Sleeve Half Zip Top - Black - Medium

Engineered from 100% ZQ-certified Merino wool, the Icebreaker 200 Oasis Long Sleeve Half Zip Top is a high-performance base layer that adapts to the demands of hiking, skiing and everyday wear. Its 200 g/m² fabric strikes the ideal balance between insulation and breathability, ensuring comfort from cold winter mornings to high-exertion climbs.

Overview

The Oasis Half Zip has been a staple in outdoor wardrobes for decades. This version improves on the classic with offset shoulder seams that sit away from the deltoids, reducing chafe under backpack straps. The distinctive half-zip collar offers additional ventilation when you need it, while the drop tail hem provides extra coverage when bending and reaching on the trail. Whether worn as a first layer or over a lightweight t-shirt, it delivers consistent climate control.

What stands out

• 100% Merino wool with ZQ certification for ethical and environmental standards
• 200 g/m² midweight fabric for versatile three-season use
• Flatlock seams minimize friction while layering or carrying loads
• Natural odour resistance and moisture wicking keep you fresh
• Machine washable cold and quick-drying with simple care

Technical details

• Material: 100% Merino wool, 200 g/m²
• Fit: Slim fit with drop tail hem
• Neckline: Half-zip collar for venting
• Sleeves: Long sleeves with offset shoulder seams
• Care: Machine wash cold (30°C) and line dry in shade
• Use case: Hiking, skiing, snow sports, everyday
• Season: All-season

Our verdict

The Icebreaker 200 Oasis L/S Half Zip Top proves that a base layer doesn’t have to be complicated to be supremely functional. Its careful construction, premium Merino fabric and practical design make it an essential piece for anyone who values comfort and performance outdoors.