Icebreaker 200 Oasis Crew vs Smartwool Merino 150 Base Layer Long Sleeve

Weight and specs compared for 2026 — and which one to choose.

Smartwool Merino 150 Base Layer Long Sleeve is the lighter option — 30 g lighter than the Icebreaker 200 Oasis Crew (17% less weight). If grams matter to you, that is the one to beat.

Spec	Icebreaker 200 Oasis Crew	Smartwool Merino 150 Base Layer Long Sleeve
Weight	180 g · 0.180 kg · 0.40 lb	150 g · 0.150 kg · 0.33 lb
Brand	Icebreaker	Smartwool
Category	Clothing - Base Layer	Clothing - Base Layer

Icebreaker 200 Oasis Crew

180 g

Classic merino wool base layer. Natural odour resistance.

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Smartwool Merino 150 Base Layer Long Sleeve

150 g

Lightweight merino-blend long-sleeve base layer (men's) with natural odor resistance for all-season layering.

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Icebreaker 200 Oasis Crew vs Smartwool Merino 150 Base Layer Long Sleeve: which should you buy?

If saving weight is your priority, the Smartwool Merino 150 Base Layer Long Sleeve wins — at 150 g it is 30 g (17%) lighter than the Icebreaker 200 Oasis Crew (180 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.

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