Outdoor Research Ferrosi Thru Gaiter zoom in


Outdoor Research Ferrosi Thru Gaiter

Outdoor Research's® best-selling Ferrosi fabric is so strong, stretchy, breathable and comfortable, it made perfect sense to apply its renowned superpowers to their legacy of protective gaiters. 

The Ferrosi Thru Gaiters earned its name for its incredibly light weight that's perfect for ounce-counting backpackers, and fits trail runners and low profile hiking boots in keeping with the ultralight ethos of thru-hikers. A shoelace hook and drawcord cinch at its top hem ensures a snug fit that keeps debris out of your footwear, and a replaceable instep strap makes gear fixes on the go a breeze.

  • One pair of gaiters
  • Water-, wind- and abrasion-resistant
  • Movement-mirroring stretch
  • UPF 50+
  • Lightweight and breathable
  • Quick drying
  • Shoelace hook
  • Drawcord cinch at top hem
  • Replaceable Hypalon™ instep strap
  • Fabric: bluesign® approved 86% nylon, 14% spandex, 90D stretch woven ripstop


  • Fits men's 4-7, women's 5-7
  • Height at back: 9.5"


  • Fits men's 6-9, women's 7-9
  • Height at back: 10"


  • Fits men's 8-11, women's 9-11
  • Height at back: 10.5"


  • Fits men's 10-13, women's 11+
  • Height at back: 11"
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OR offers technical solutions for a wide range of adventures and conditions and infuses them with compelling color and style. From rugged mountaineering outerwear to wicking, sun protection sportswear, Outdoor Research® proves that function and style do not have to be mutually exclusive.

Every journey into the outdoors develops a lifetime of potential trips. Each hour under the sky adds to the momentum that carries us. Outdoor Research® is out there following the possibilities and building energy, just like you. Every piece of OR gear is shaped by this pursuit of human powered adventure. Each is designed to function with the experience, and each is guaranteed for life.

Designed By Adventure®
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