Icebreaker 260 Tech Long Sleeve vs Smartwool Merino 150 Base Layer Top
Weight and specs compared for 2026 — and which one to choose.
Midweight merino base layer for cold conditions.
Full details →Lightweight merino wool base layer with excellent moisture management.
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Icebreaker 260 Tech Long Sleeve vs Smartwool Merino 150 Base Layer Top: which should you buy?
If saving weight is your priority, the Smartwool Merino 150 Base Layer Top wins — at 163 g it is 67 g (29%) lighter than the Icebreaker 260 Tech Long Sleeve (230 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.