REI Co-op Hiking Merino Socks Review (2026)

Name: REI Co-op Hiking Merino Wool Socks
Brand: REI Co-op

REI Co-op Hiking Merino Wool Socks use 48% merino wool and 52% nylon in a cushioned heel and toe zone with a flat toe seam — the three factors that prevent blister formation. The merino component provides odor resistance and moisture wicking; the nylon provides durability at the high-friction zones.

The short version

REI Co-op Hiking Merino Socks are the best-value hiking socks. We looked at how cushion zone placement and durability compare to Darn Tough Vermont socks.

Who it's for

Buy this if: Every hiker — hiking socks are the single most impactful blister-prevention investment.

Skip this if: No one.

In practice

Blister Physics

Blisters form when shear force between sock and skin exceeds skin's elasticity — the sock moves, the skin doesn't, fluid forms at the separation point. Prevention: eliminate friction at sock-skin interface (merino wool reduces this vs. cotton), eliminate moisture (merino wicks faster than cotton), eliminate compression (cushion zones absorb shock that forces shoe-against-skin movement).

What we loved

+ 48% merino provides odor resistance without full merino fragility+ Nylon reinforcement at heel and toe extend durability past pure merino+ $16/pair vs. Darn Tough at $25 — 35% savings at similar performance

What we'd change

– Less durable than Darn Tough over 2+ years of regular use– Cushion profile less aggressive than Smartwool PhD series

Where to buy

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Links are Amazon affiliate links — we earn a commission if you buy, at no extra cost to you. It never changes our score.

Common questions

Darn Tough or REI?

Darn Tough provides a lifetime warranty replacing worn-through socks forever. REI: no lifetime warranty. If you wear socks out in 2 years: Darn Tough wins over a decade. If you're less frequent: REI's 35% lower price wins.

Which weight?

Lightweight: day hiking in trail runners. Midweight: multi-day with pack weight. Heavyweight: winter and full boot use.

Methodology: Our gear ratings combine manufacturer specifications with aggregated owner feedback and long-term durability reports from verified buyers. We weigh value, packability, durability, and real-world reliability. Ratings are never influenced by commission rates. Last verified 2026-07-03.

Affiliate disclosure: This review contains Amazon affiliate links. If you buy through them, Gear Made Simple earns a small commission at no extra cost to you.

Who it's for

In practice

Blister Physics

Check the current price

Common questions

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