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Merino Cloudripper Fleece

The Ridge Merino Cloudripper Fleece occupies a distinct middle ground in cold-weather layering systems. Designed around a hybrid knit containing merino wool, polyester, and spandex, it blends the natural thermal regulation and odor resistance of animal fiber with the structural tenacity and faster drying capability of synthetics. Independent testing recognition, including accolades from Treeline Review as a top full-zip midlayer, highlights its practicality for active cold-weather pursuits where

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Topic summary

The Ridge Merino Cloudripper Fleece occupies a distinct middle ground in cold-weather layering systems. Designed around a hybrid knit containing merino wool, polyester, and spandex, it blends the natural thermal regulation and odor resistance of animal fiber with the structural tenacity and faster drying capability of synthetics. Independent testing recognition, including accolades from Treeline Review as a top full-zip midlayer, highlights its practicality for active cold-weather pursuits where

Key takeaways

  • Merino wool and synthetic hybrid knit construction
  • Built-in stretch for unrestricted mobility on technical terrain
  • Full-length center front zipper for rapid ventilation
  • Zippered pockets for secure trail storage
  • Low-profile hem and cuffs designed for clean layering
  • Wool-synthetic blend resists multi-day odor far better than standard polyester

Intended uses

  • Backcountry ski touring
  • Multi-day winter backpacking
  • Shoulder-season alpine climbing
  • Cold-weather ridge hiking

Verification notes

Evidence: expert reviewed. Last verified October 16, 2026.

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Editorial take

The Cloudripper Fleece targets active backcountry users who want the climate-control benefits of natural wool without sacrificing the structural resilience of modern technical fleece. By co-knitting merino wool with polyester and elastane, Ridge Merino created a piece that resists packing out, dries reasonably fast, and avoids the clamminess typical of fully synthetic fleeces. It functions best as an outer layer during high-output winter ascents or as a dedicated midlayer beneath a hardshell in bitter conditions.

On the trail, the hybrid fabric balances warmth and airflow effectively across steep grade changes. The interior traps warmth without suffocating, while the exterior stands up well against backpack straps and light abrasion. Unlike pure merino garments that tend to bag out or snag easily over time, the synthetic core provides essential dimensional stability and wear resistance. Still, wool fibers naturally retain moisture longer than pure polyester grids, making active mechanical venting via the front zipper necessary during sustained anaerobic pushes.

Packability is solid for a wool-content garment, though it rolls up noticeably thicker than minimalist ultralight fleeces. Against comparable market options, it lands in an appealing space: it outperforms standard polyester midlayers on multi-day trips where odor buildup is an issue, while offering a more practical, durable build than fragile pure wool alternatives. It is an honest, hardworking layer for skiers, hikers, and climbers who prioritize multi-day comfort over absolute gram-counting.

Best for

  • Backcountry ski touring
  • Multi-day winter backpacking
  • Shoulder-season alpine climbing
  • Cold-weather ridge hiking

Not ideal for

  • Dries slower than fully synthetic grid fleeces when saturated with sweat
  • Heavier and bulkier to pack down than minimalist polyester midlayers
  • Breathable knit allows wind penetration, requiring a protective outer shell
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Verified specifications

Key features
  • Merino wool and synthetic hybrid knit construction
  • Built-in stretch for unrestricted mobility on technical terrain
  • Full-length center front zipper for rapid ventilation
  • Zippered pockets for secure trail storage
  • Low-profile hem and cuffs designed for clean layering

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

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Data sources & verification

  • Last verified: 10/16/2026

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