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REI Co-op Merino Wool Base Layer Crew vs Ridge Merino Aspect Crew

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

REI Co-op Merino Wool Base Layer Crew is the lighter option — 14 g lighter than the Ridge Merino Aspect Crew (7% less weight). If grams matter to you, that is the one to beat.
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Spec REI Co-op Merino Wool Base Layer Crew Ridge Merino Aspect Crew
Weight 190 g · 0.190 kg · 0.42 lb 204 g · 0.204 kg · 0.45 lb
Brand REI Co-op Ridge Merino
Category Clothing - Base Layer Clothing - Base Layer
REI Co-op Merino Wool Base Layer Crew
190 g

Budget-friendly merino wool base layer for backpacking.

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Ridge Merino Aspect Crew
204 g

Merino wool base layer at 180 g/m². Sweet spot of warmth for everyday winter use.

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REI Co-op Merino Wool Base Layer Crew vs Ridge Merino Aspect Crew: which should you buy?

If saving weight is your priority, the REI Co-op Merino Wool Base Layer Crew wins — at 190 g it is 14 g (7%) lighter than the Ridge Merino Aspect Crew (204 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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