Arc'teryx Rho LT Crew vs Icebreaker 200 Oasis Crew

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

Arc'teryx Rho LT Crew is the lighter option — 25 g lighter than the Icebreaker 200 Oasis Crew (14% less weight). If grams matter to you, that is the one to beat.

Spec	Arc'teryx Rho LT Crew	Icebreaker 200 Oasis Crew
Weight	155 g · 0.155 kg · 0.34 lb	180 g · 0.180 kg · 0.40 lb
Brand	Arc'teryx	Icebreaker
Category	Clothing - Base Layer	Clothing - Base Layer

Arc'teryx Rho LT Crew

155 g

Lightweight Phasic base layer for cool and active conditions.

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Icebreaker 200 Oasis Crew

180 g

Classic merino wool base layer. Natural odour resistance.

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Arc'teryx Rho LT Crew vs Icebreaker 200 Oasis Crew: which should you buy?

If saving weight is your priority, the Arc'teryx Rho LT Crew wins — at 155 g it is 25 g (14%) 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.

More clothing - base layer comparisons

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