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x Flylow Mill D Bib Pant - Men's

4 out of 5 stars
24 Reviews

Out of Stock

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Mill D Bib Pant

At Backcountry, touring is written into our DNA. It's the first of many activities that define us as Gearheads, so when the product experts at Flylow Gear offered to incorporate our feedback and advice into the Backcountry x Flylow Mill D bib Pants, we jumped at the chance. These bib pants are the result of 20 years of backcountry-specific experience where we learned that the most important qualities for pants are ridiculous breathability and reliable waterproofing. Since Backcountry and Flylow share a passion for touring, it's no surprise that the Mill D provides that and more.

The Mill D's thin, light, 3-layer construction includes a waterproof, air permeable Polartec Neoshell laminate—one of the few waterproof membranes that’s actually air permeable. Unlike standard membranes, which only start breathing until after you work up a sweat, Polartec Neoshell starts to breathe the moment you pull it on. That reduces the risk of working up an inner layer of moisture while laboring up a skin track, only to have that turn into a clammy chill when you drop in on your line. The Mill D’s 3-layer construction is also ridiculously light, thin, and packable—ideal for international trips like the Japan trip that a crew of Gearheads go on every winter or any local dawn patrol where conditions are variable.


  • Ski bib pant designed by Backcountry and Flylow Gear
  • Polartec Neoshell is reliably waterproof and air permeable
  • 3-layer construction makes the pant light and packable
  • Bib built out of a stretchy, breathable softshell material
  • Articulated design ensures freedom of movement
  • Skin attachment in pocket stores frozen climbing skins
  • Gearhead Certified Product
  • Item #BCC009R
[membrane/laminate] Polartec NeoShell, [face fabric] 72% polyester, 28% nylon, DWR treatment, [cuffs] 500d Cordura
fully sealed
2 zippered thigh, 1 zippered front, 2 bib (1 zippered)
Side Zips
3/4 length
Claimed Weight
Recommended Use
backcountry skiing
Manufacturer Warranty
limited lifetime