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Compare Best Long Underwear head to head

Pick any two picks from this list and see specs, current price, pros, cons and reader ratings side by side.

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230 Competition

#5 on this list

230 Competition

Ortovox

Austrian Merino with mesh panels where you overheat. Best for hard uphill in cold air.

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Ullfrotté Original 400

#6 on this list

Ullfrotté Original 400

Woolpower

Swedish terry-loop wool worn by arctic militaries. Loft that survives repeated washing.

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Specs side by side

230 Competition versus Ullfrotté Original 400 specifications
Spec230 CompetitionUllfrotté Original 400
Material80% Merino Wool, 20% PolyamideUllfrotté Original (Merino Wool/Polyamide)
Weight230 g/m² (main fabric)
FitAthletic, form-fitting
ConstructionBody-mapped knitTerry-loop knit
Odor ResistanceHigh
OriginAustria (wool)Sweden
MakerWoolpower
Weight ClassMid-Heavyweight (400 g/m²)
Best ForExtreme cold, low activity

What our reviewers liked and didn't

230 Competition

  • Exceptional temperature regulation via body-mapping
  • Highly breathable, prevents overheating during exertion
  • Excellent odor resistance, suitable for multi-day use
  • Comfortable, non-chafing seamless construction
  • Good balance of warmth, durability, and stretch
  • Premium price point may be prohibitive for some
  • Requires careful washing to maintain integrity
  • Snug fit may not appeal to all users

Ullfrotté Original 400

  • Exceptional warmth in extreme cold
  • Highly durable, resists wear and tear
  • Terry-loop knit traps air effectively
  • Maintains insulating loft after washing
  • Wicks moisture surprisingly well for its thickness
  • Retains warmth even when damp
  • Bulky and less packable than lighter alternatives
  • Can be too warm for high-output activities or milder conditions
  • Higher price point compared to standard base layers

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