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Icebreaker 150 Zone Long Sleeve vs Ortovox 185 Merino Rock'n'Wool

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

Icebreaker 150 Zone Long Sleeve is the lighter option — 37 g lighter than the Ortovox 185 Merino Rock'n'Wool (20% less weight). If grams matter to you, that is the one to beat.
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Spec Icebreaker 150 Zone Long Sleeve Ortovox 185 Merino Rock'n'Wool
Weight 150 g · 0.150 kg · 0.33 lb 187 g · 0.187 kg · 0.41 lb
Brand Icebreaker Ortovox
Category Clothing - Base Layer Clothing - Base Layer
Icebreaker 150 Zone Long Sleeve
150 g

Ultralight merino base layer for high-output activities.

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Ortovox 185 Merino Rock'n'Wool
187 g

Merino wool base layer at 6.6 oz. Balances warmth and weight effectively.

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Icebreaker 150 Zone Long Sleeve vs Ortovox 185 Merino Rock'n'Wool: which should you buy?

If saving weight is your priority, the Icebreaker 150 Zone Long Sleeve wins — at 150 g it is 37 g (20%) lighter than the Ortovox 185 Merino Rock'n'Wool (187 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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