Arc'teryx Rho LT Crew vs Ortovox 185 Rock'N'Wool Long Sleeve
Weight and specs compared for 2026 — and which one to choose.
Lightweight Phasic base layer for cool and active conditions.
Full details →Mid-weight 100% merino long-sleeve base layer with body-mapped zones for warmth, breathability and odor control.
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Arc'teryx Rho LT Crew vs Ortovox 185 Rock'N'Wool Long Sleeve: which should you buy?
If saving weight is your priority, the Arc'teryx Rho LT Crew wins — at 155 g it is 37 g (19%) lighter than the Ortovox 185 Rock'N'Wool Long Sleeve (192 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.