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Say goodbye to midwinter chills. Relance™ Primeflex and PeakFill™ Active Insulation combine in this fully articulated, warm and highly breathable active insulation midlayer.

Stand up to the most daunting weather reports and midwinter chills with our Fernos Insulated Pant. This reliably warm and highly breathable insulation midlayer laughs off sub zero days with a Relance™ Primeflex shell and PeakFill™ Active Insulation. The medium cut is designed for an on-the-go lifestyle, be it a pick-up pond hockey game or chasing the kids up the trail. Stretch panels and full articulation allow for complete freedom of movement while thoughtful design details like an encased elastic waistband, zip fly and drawcord make for easy on and off—although the Fernos is the type of insulated comfort you won't want to shed anytime soon.

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 Image Relance™ Primeflex
 Image PeakFill™ Active
Shell and Lining

Relance™ Primeflex, 50 Denier Microfiber Mechanical Stretch Plainweave, 100% Polyester,  85g/m2 with 80/20 DWR finish

Relance™ Primeflex 100% polyester microfiber offers better drape and wicking than that of normal polyester fibers. This fabric features a soft hand, comfortable stretch, wind resistance, and excellent resiliency and strength.

Insulation

PeakFill™ Active Insulation, 50% Polyester, 50% Recycled Polyester, 40g/m2

Our PeakFillActive proprietary insulation balances warmth and breathability to maintain lasting athletic comfort across the entire conditional range. Designed to keep core temps regulated, the synthetic fiber fill draws on a spiral filament structure to enable greater stretch, faster recovery and quicker dry times than traditional lofted insulation whether rolling slow at valley level or working hard up in the alpine.

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Partnerships

As caretakers of the mountain life, we recognize our responsibility to support organizations and people who share our vision to drive positive change for people and the planet. We’re proud to partner with some tremendous organizations in their missions to responsibly advance outdoor recreation and protect our wild surroundings.

Materials

We are committed to building garments that are durable, timeless and continue to perform season after season. Over 50% of our product line incorporates preferred materials, which include organic cotton, recycled materials and responsibly-sourced down. We are committed to growing our preferred materials usage to 75% by 2025 and to completely eliminating PFAS from our garments by 2025.

Stio Second Turn®

Our apparel is built to last. As a part of our efforts to reduce waste and keep more gear in the mountains where it belongs, our home-grown gear renewal program allows previously-used items to be traded in, cleaned, repaired and circulated back into use.

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Fabric Details
  • Stio PeakFill™ Active Insulated layer with stretch panels and articulation for full range of motion
  • Microfiber with soft hand and mechanical stretch
Construction
  • Encased elastic waistband plus zip fly and button closure with drawcord for easy on and off
  • Custom Stio® drawcord for customized fit
Pockets
  • Reach-in hand pockets
Fit and Measurements
  • Regular Fit: A casually shaped design that’s not too tight and not too baggy
  • Inseam: 29 1/2"
  • Weight: 10 oz.
Other Details
  • Heat transfer Stio® and Pinecone logos
  • Imported
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