Icebreaker Men's 200 Oasis LS Crewe (Agate)

Icebreaker’s 200 Oasis is the original merino base layer – the one that set the standard for natural performance. A true all-year outdoor icon, it has earned its reputation among adventurers who value warmth, comfort, and versatility without compromise.

Made from 100% merino wool, the Oasis 200 delivers reliable performance season after season. Naturally breathable, temperature-regulating, and odour-resistant, it keeps you comfortable whether you’re hiking mountain trails, exploring snowy landscapes, or travelling light.

Check out this Icebreaker Men’s 200 Oasis LS Crewe video to see how this shirt fits.

Its timeless design and minimal seam lines ensure both comfort and durability, while thoughtful details like underarm gussets and offset shoulder seams improve mobility and prevent chafing when wearing a backpack. The 200 Oasis adapts effortlessly to your activity level — perfect for hiking, snow sports, everyday active wear, or travel. As a plastic-free base layer, it combines natural functionality with sustainable performance, redefining what it means to stay warm, dry, and comfortable outdoors.

• Made of 100% merino wool, soft merino fibers that regulates body temperature in all weather conditions and resists odors
• Crewe neck
• Offset shoulder seams to prevent friction
• Gusseted underarms for mobility and comfort
• Flatlock seams to prevent friction
• Drop tail hem for added coverage
• Easy care, normal cold machine wash (30-40º)