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200 / 400 Zip Turtleneck

Swedish terry-loop merino — thicker and warmer than standard jersey. Preferred by cold-weather guides.

Expert reviewed

Topic summary

Swedish terry-loop merino — thicker and warmer than standard jersey. Preferred by cold-weather guides.

Key takeaways

  • Ullfrotté terry-loop knit fabric
  • Merino wool blend (60%/70% merino content)
  • High collar with half-zip
  • Flatlock seams for comfort
  • Machine washable at 60°C
  • Exceptional warmth-to-weight ratio for cold conditions

Intended uses

  • Winter hiking and mountaineering
  • Ski touring and resort skiing
  • Cold weather guiding
  • Ice climbing
  • Backcountry hunting

Verification notes

Evidence: expert reviewed. Last verified July 14, 2026.

Catalog photo
Real product photography — no AI-generated or placeholder imagery.

Editorial take

The Woolpower 200/400 Zip Turtleneck isn't your average merino base layer. This is serious cold-weather insulation, built around their unique terry-loop Ullfrotté fabric. Unlike smooth jersey knits, these loops create air pockets close to the body, trapping warmth far more effectively. The 200-gram version serves as a robust base layer or light mid-layer, while the 400-gram steps up to a formidable mid-layer, suitable for active pursuits in genuinely frigid conditions or as a warm base layer when static in extreme cold. The fit is generally athletic, designed to layer efficiently, though some may find it a bit snug. The high collar with a half-zip allows for crucial temperature regulation, dumping heat when you're working hard and sealing it in when hunkering down.

Durability is where Woolpower truly shines. The blended fabric (60% merino wool, 25% polyester, 13% polyamide, 2% elastane for the 200g; 70% merino, 28% polyamide, 2% elastane for the 400g) means it holds up exceptionally well to repeated washing and hard use, outlasting many pure merino garments without compromising wool's natural thermal and odor-resistant properties. This isn't a piece you buy for fashion; it's a workhorse built for utility. While it lacks the sleek aesthetic of some performance layers, its function in demanding environments is undeniable. The interior feels surprisingly soft against the skin, and the flatlock seams prevent chafing during sustained activity. It’s a significant investment, but one that pays dividends in comfort and longevity.

Where does it sit? It carves out a niche above most standard merino options, bridging the gap between base layers and serious mid-insulation. For guides, search and rescue, or anyone spending extended time in cold, damp conditions, the Woolpower Zip Turtleneck is a go-to. It breathes well, manages moisture effectively, and continues to insulate even when damp. Its bulk and price point are its main considerations, but for those prioritizing warmth, durability, and reliable performance over lightweight minimalist designs, it’s a top-tier choice that performs exactly as advertised.

Best for

  • Winter hiking and mountaineering
  • Ski touring and resort skiing
  • Cold weather guiding
  • Ice climbing
  • Backcountry hunting

Not ideal for

  • Bulkier than traditional jersey knit base layers
  • Higher price point than many merino alternatives
  • Fit can be snug
  • not for those preferring a loose feel
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Verified specifications

Country of manufacture
🇸🇪 Sweden
Key features
  • Ullfrotté terry-loop knit fabric
  • Merino wool blend (60%/70% merino content)
  • High collar with half-zip
  • Flatlock seams for comfort
  • Machine washable at 60°C

Warranty and repair information: contact Woolpower directly for the most current terms. Woolpower support

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