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Unpredictable mountain weather calls for dependable warmth. We put more fill in the body, where you need it the most, and kept the arms slim for a fashionable, performance look.

Straight-up flannel only goes so far in a Wyoming winter, which is why our Buckhorn adds 100% recycled polyester Thermore® Ecodown® synthetic insulation. Lofted by location—with more fill in the body, less in the sleeves—the organic, brushed-cotton flannel rolls loose but packs tech warmth underneath. Worn over a tech tee, hoodie or even another flannel, it fires up outdoor-rated warmth during backyard bonfires, parking lot tailgates or campground jam sessions. Hidden chest pocket snaps lock in supplies while handwarmer pockets stow or stand-in for gloves.

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 Image Organic Cotton
 Image Thermore® Ecodown®

Mid Weight Organic Cotton Flannel, 100% Organic Cotton, 220g/m2 with DWR Finish


Thermore® Ecodown®, Staple Filament Insulation, 100% Recycled Polyester, Body 60g/m2, Sleeves 40g/m2

Thermore® Ecodown® offers the advantages of synthetic insulation with the soft touch properties of down. Ideal for slimmer profile insulators, it's soft and warm, lightweight and comfortable, compactable, durable and and easy to care for. Ecodown® features Thermore's exclusive fiber migration treatment, is bluesign® approved and manufactured with full respect to animals and the environment. 


50 Denier Plainweave, 100% Polyester, 73g/m2 with WR

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Climate Neutral

We completely offset the footprint of each order through our commitment to being climate neutral. As part of our mission we value being good caretakers of the mountain life and protecting the places where we play.


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.

Trade-In Program

We believe a circular commerce system will design out waste and pollution, allowing for used clothing to be renewed and put back into use. Stio Second Turn™️ is our gear renewal program that allows customers to trade in and shop used apparel.

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Fabric Details
  • Organic cotton brushed flannel shell
  • Mapped Thermore® Ecodown® recycled insulation
  • Handwarmer pockets
  • Shirt tail hem
Weight and Measurements
  • Weight: 29 oz.
  • Center Back Length: 29" (Size M)
Other Details
  • Custom Stio® snaps at front closure
  • Embroidered Pinecone logo
  • Imported
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