Icebreaker Merino 200 Oasis Long Sleeve Crewe vs Smartwool Merino 250 Crew
Weight and specs compared for 2026 — and which one to choose.
100% merino wool long-sleeve base layer at 200gsm, naturally odor-resistant and temperature-regulating for multi-day wilderness trips.
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Icebreaker Merino 200 Oasis Long Sleeve Crewe vs Smartwool Merino 250 Crew: which should you buy?
If saving weight is your priority, the Icebreaker Merino 200 Oasis Long Sleeve Crewe wins — at 185 g it is 85 g (31%) lighter than the Smartwool Merino 250 Crew (270 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.
See where both rank against everything else in this category on the lightest clothing - base layer page, or browse the full gear weight database.