Size Guide

A LETTER FROM OUR FOUNDER

Maps, Myths, and Mayhem

"In the summer of 1995, I wore the same pair of shorts every single day. That summer, and those shorts, felt like something straight out of The Goonies. I was 15, wild at heart, spending my days in the mountains, lakes, and rivers of Maine. We lived off brook trout, bathed in the lake, waged epic one-pump BB gun wars, and built forts deep in the woods.

For 30 years, I searched for a pair of shorts that could match the durability and feel of those originals. I never found them—so I made them. Right here in America. The fabric we invented is called ORIGIN NYLOC®." - Pete Roberts

"Back then, my ragtag crew didn’t need to be told to Get The F*** Outside. That was just life—through brutally cold winters and scorching hot summers."

THREE OPTIONS TO MATCH YOUR PACE.

GTFO WAS BORN OUTSIDE

When we set out to build the GTFO Collection, we handed it to a bunch of Gen X’ers and told them to do what they do best. They jumped out of airplanes, hiked the Appalachian Trail, hunted in the Maine mountains, and wandered the cobbled streets of Europe. We made a few tweaks, refined the fit, and built the perfect pant—one that performs day after day after day.

WATCH THE GTFO COME TO LIFE

We documented the first time we put the GTFO Pant to the test. Naturally it involved Special Forces Operators jumping out of helicopters into the remote backcountry of MOAB, UT.

ORIGIN NYLOC®

Origin NYLOC® is a proprietary 99% nylon, 1% spandex performance fabric engineered for rugged durability, lightweight comfort, and unrestricted movement. Weighing just 7.2 oz, it delivers military-grade abrasion resistance, 4-way stretch, water and odor resistance, and mil-spec reinforced stitching. Built to handle harsh conditions and high-output activity, it's designed and developed in the USA and proudly manufactured in Asheboro, North Carolina.

SECURE STORAGE

Two streamlined thigh pockets give the GTFO Mountain Pant stealth storage without the bulk. Positioned for comfort and quick access, especially when seated. Each pocket is secured with a rugged YKK zipper, keeping your essentials close and your movement unrestricted.

ENHANCED PROTECTION

The GTFO Mountain Pant is reinforced at the knees with a second layer of ORIGIN NYLOC® doubling durability right where it counts. Built to take the hits from crawling, climbing, or kneeling on unforgiving ground. And for next-level protection, each knee is designed to accommodate pad inserts for those who push even harder. (Knee pads sold separately)

Some men stay put. Others keep moving. Chasing adventure, covering ground, and navigating the unknown. If you're the latter, you need GTFO.

4.7
Rated 4.7 out of 5 stars
Based on 30 reviews
Total 5 star reviews: 23 Total 4 star reviews: 5 Total 3 star reviews: 1 Total 2 star reviews: 1 Total 1 star reviews: 0
SizingRated -0.0 on a scale of minus 2 to 2
93%would recommend this product
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30 reviews
  • KL
    Kelly l.
    Verified Buyer
    Reviewing
    GTFO STRETCH WOVEN MOUNTAIN PANT-STRAIGHT Scout Tan / 34 / 34
    I recommend this product
    What is your body type? Athletic
    What is your height? 6' 2"
    How old are you? 55-64
    What is your weight? 176-200
    Rated 5 out of 5 stars
    Yesterday
    Camino de Santiago

    I bought a pair and just finished the Camino de Santiago to Compostela. They did great! I took another pair from another label and never unpacked them. Comfort 5, cool when needed 5, cut the wind 5, and dried quickly after a quick wash 5! I also wore the wool socks and wicking tees by Origen and they were great! Buen Camino!

    SizingRated 0.0 on a scale of minus 2 to 2
    OU Profile picture for Origin USA
    Origin USA
    10 hours ago

    Hey Kelly,

    What an incredible adventure, completing the Camino de Santiago to Compostela is no small feat, and we're thrilled the GTFO STRETCH WOVEN MOUNTAIN PANT-STRAIGHT was your go-to choice for the entire journey! It's awesome to hear they performed so well that you never even needed to unpack that backup pair from another brand.

    We love that these pants delivered perfect 5s across the board: comfort, breathability, wind protection, and quick-drying performance. That's exactly what we designed them for, and knowing they handled everything the Camino threw at you confirms we nailed the balance of durability and functionality for serious adventures.

    It's fantastic that our wool socks and wicking tees rounded out your Origin system perfectly for such an epic trek. There's nothing better than hearing our gear helped make your pilgrimage more comfortable and enjoyable.

    Buen Camino, and thank you for choosing Origin for such a meaningful journey!

    • Origin
  • J
    Jimmy
    Verified Buyer
    Reviewing
    GTFO STRETCH WOVEN MOUNTAIN PANT-STRAIGHT Scout Tan / 38 / 32
    I recommend this product
    What is your body type? Round
    What is your height? 5' 10"
    How old are you? 45-54
    What is your weight? 251-275
    Rated 5 out of 5 stars
    2 days ago
    SAR approved

    I recently wore these for a 30+/ hr search and rescue field class. There was some crazy thick briers and trees we had to search through. At the end there was only 2 very small snag spots which almost went away after I washed and dried them! I will continue to add a few more pair to my closet! Thanks for all your great work!!

    SizingRated 0.0 on a scale of minus 2 to 2
    OU Profile picture for Origin USA
    Origin USA
    Yesterday

    Hey Jimmy,

    We love to hear about your experience with the GTFO STRETCH WOVEN MOUNTAIN PANT-STRAIGHT, and that they have earned your SAR approval after such an intense 30+ hour search and rescue field class! It's awesome that our pants held up to those crazy thick briers and trees with only two tiny snag spots that practically disappeared after washing. That's exactly the kind of durability and performance we engineered into this piece.

    We love how this confirms the absolute success of our dedication to creating gear that can handle the most demanding conditions while still looking great afterward. Your plan to add more pairs to your closet and your recognition of our work means everything to us!

    Thank you for choosing Origin and for the incredible work you do in search and rescue!

    • Origin
  • BT Profile picture for Binh T.facebook logo
    Binh T.
    Verified Buyer
    Reviewing
    GTFO STRETCH WOVEN MOUNTAIN PANT-STRAIGHT OD Green / 30 / 32
    I recommend this product
    What is your body type? Normal
    What is your height? 5' 8"
    How old are you? 25-34
    What is your weight? 176-200
    Rated 5 out of 5 stars
    1 month ago
    From River Swims to City Walks, These Pants Do It All

    I’ve put my Origin GTFO Mountain Pants through everything — swimming in the Chattanooga rivers, hiking rugged trails, and even heading out to dinner or the park — and they’ve exceeded every expectation. These pants strike that perfect balance between technical performance and everyday versatility.

    The NYLOC® fabric is a game changer: a tightly woven, lightweight nylon layer that’s incredibly durable yet comfortable, with just the right amount of stretch. They dry fast — a must when I hop out of the river — and the DWR treatment keeps me dry in unexpected rain or splashes. The body-heat activated wrinkle release and pre-shrunk fit mean they always look sharp, whether I’m outdoors or in the office.

    The pockets are thoughtfully designed: deep hand pockets that secure your essentials — you can tell Origin designed these for people who move.

    They also pack incredibly light, taking up almost no room in my suitcase — perfect for travel or weekend getaways. I often pair them with my brrr° training shirt, and that combo is unbeatable for swimming rivers or cooling off after a long hike.

    Beyond the gear itself, I really appreciate Origin’s mission — crafting American-made products with a focus on innovation, sustainability, and local manufacturing. There’s something special about knowing that what I wear supports American craftsmanship and jobs.

    SizingRated 0.0 on a scale of minus 2 to 2
    OU Profile picture for Origin USA
    Origin USA
    4 weeks ago

    Hey Binh T.,

    That's absolutely incredible to hear that the GTFO Mountain Pants are delivering that perfect versatility from Chattanooga river swims to city walks! We're thrilled that they're exceeding your expectations across every adventure you throw at them. The fact that you can seamlessly go from swimming and hiking to dinner and the office - that's exactly the kind of performance we designed these pants for.

    It's awesome that you're experiencing the full power of that NYLOC® fabric and how it delivers that perfect combination of durability, stretch, and quick-dry performance. Your appreciation for those thoughtfully designed deep pockets really hits home - we absolutely design these for people who move and need their gear to keep up.

    We love that they're packing light for your travels and that the combo with your brrr° training shirt is working so perfectly for those river adventures and post-hike cooldowns. There's nothing better than knowing our gear is becoming an essential part of your active lifestyle.

    Your support for our mission of American-made innovation and craftsmanship really means the world to us. Knowing that our GTFO Mountain Pants are representing that commitment to quality and supporting American manufacturing while delivering exactly what you need is what gets us excited every day.

    -Origin

  • JT Profile picture for Jon T.facebook logo
    Jon T.
    Verified Reviewer
    Reviewing
    GTFO STRETCH WOVEN MOUNTAIN PANT-STRAIGHT
    I recommend this product
    What is your body type? Athletic
    What is your height? 6' 2"
    How old are you? 45-54
    What is your weight? 226-250
    Rated 5 out of 5 stars
    1 month ago
    Seven days straight in Iceland and six months of other use….

    Super compact for travel, odor resistant, wind, and weather resistant, abrasion resistant, comfortable even when wet. They still look new. Pretty much impossible to stain..

    Whether I was wading through rivers for arctic char, browntrout and salmon climbing volcanoes or flying on international flights, these pants were constantly exceeding expectations.

    Love that your products are made in America, with American materials and by American workers.

    Love your mission!

    SizingRated 0.0 on a scale of minus 2 to 2
    OU Profile picture for Origin USA
    Origin USA
    1 month ago

    Hi Jon T.,

    That's incredible to hear! We're absolutely thrilled that your GTFO STRETCH WOVEN MOUNTAIN PANTS held up so perfectly through seven straight days in Iceland and six months of adventures beyond that. That's exactly what we designed these pants for, and hearing that they still look new after all that use is music to our ears.

    Thanks for being such an awesome Origin customer and for putting our gear to the ultimate test!

    -Origin

  • AM
    Angus M.
    Verified Buyer
    Reviewing
    GTFO STRETCH WOVEN MOUNTAIN PANT-STRAIGHT Scout Tan / 36 / 34
    I recommend this product
    What is your body type? Normal
    What is your height? 6' 4"
    How old are you? 45-54
    What is your weight? 201-225
    Rated 5 out of 5 stars
    1 month ago
    Great pants for canoeing!

    I recently wore these for 5 days straight on a canoe trip in Minnesota. The pants were comfortable and breathable enough to wear in the hot weather to maintain bug and sun protection, dried fast after wet-footing the portages, and held up great to mucking about in the brush for firewood and hanging the bear bag. Also, the pocket layout is great for accessing items while seated/paddling. The only minor edit I would make would be to drop the double knee another inch or so, sometimes in very flexed scenarios, I was right on the coverage edge of the double knee. I am picky about pants in the outdoors, and these are legit.

    SizingRated 0.0 on a scale of minus 2 to 2
    OU Profile picture for Origin USA
    Origin USA
    1 month ago

    Hi Angus,

    That's an incredible real-world test for the GTFO STRETCH WOVEN MOUNTAIN PANT-STRAIGHT - five straight days on a Minnesota canoe trip with everything from hot weather to portage wet-footing and brush bushwhacking! We're thrilled they delivered on all fronts: comfort, breathability, quick-drying performance, and durability. It's fantastic that the pocket layout worked so well for accessing gear while paddling - that kind of thoughtful functionality is exactly what we're aiming for. Your feedback about the double knee placement is really valuable too; we appreciate that level of detail from someone who's clearly picky about outdoor gear performance. Thanks for putting these through their paces and for the awesome review!

    -Origin