Patagonia Capilene Midweight Crew vs REI Co-op Merino Wool Base Layer Crew

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

Patagonia Capilene Midweight Crew is the lighter option — 5 g lighter than the REI Co-op Merino Wool Base Layer Crew (3% less weight). If grams matter to you, that is the one to beat.

Spec	Patagonia Capilene Midweight Crew	REI Co-op Merino Wool Base Layer Crew
Weight	185 g · 0.185 kg · 0.41 lb	190 g · 0.190 kg · 0.42 lb
Brand	Patagonia	REI Co-op
Category	Clothing - Base Layer	Clothing - Base Layer

Patagonia Capilene Midweight Crew

185 g

Recycled polyester base layer. Fast drying and durable.

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REI Co-op Merino Wool Base Layer Crew

190 g

Budget-friendly merino wool base layer for backpacking.

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Patagonia Capilene Midweight Crew vs REI Co-op Merino Wool Base Layer Crew: which should you buy?

If saving weight is your priority, the Patagonia Capilene Midweight Crew wins — at 185 g it is 5 g (3%) lighter than the REI Co-op Merino Wool Base Layer Crew (190 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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