Icebreaker Women's 200 Oasis Long Sleeve Crewe Thermal Base Layer Top - Midnight Navy - XS

At a featherlight 200 g/m², this 100% Merino wool base layer delivers exceptional warmth without bulk. The Icebreaker Women's 200 Oasis Long Sleeve Crewe in Midnight Navy is a versatile thermal top that regulates temperature across all seasons, keeping you comfortable from alpine hikes to everyday commutes.

Overview

Crafted from pure, ethically sourced Merino wool, the 200 Oasis Crewe is the cornerstone of any layering system. Its slim fit hugs the body for efficient heat retention, while the crew neck and long sleeves provide full coverage. The naturally breathable fabric wicks moisture away from the skin and resists odors, so you stay fresh even after long days outdoors.

What stands out

• Ultra-soft 100% Merino wool (200 g/m²) for next-to-skin comfort
• Flatlock seams prevent chafing during high-output activities
• Gusseted underarms enhance mobility for unrestricted movement
• Odor-resistant and moisture-wicking properties keep you dry and fresh
• All-season versatility: wear alone in mild weather or as a base layer in cold conditions

Technical details

• Material: 100% Merino wool, 200 g/m² fabric weight
• Fit: Slim fit
• Neck: Crew neck
• Sleeves: Long sleeve
• Seams: Flatlock to minimize friction
• Underarm: Gusseted construction
• Color: Midnight Navy
• Size: XS
• Care: Machine wash cold, line dry

Our verdict

The Icebreaker 200 Oasis Crewe is a benchmark in Merino base layers. Its perfect balance of warmth, breathability, and odor resistance makes it an indispensable piece for any outdoor enthusiast or anyone seeking year-round comfort.