Mens South Fork Guide Pant-Pants-Free Fly-Desert Tan-Mountain Sports
Free Fly

Men's South Fork Guide Pant

Guide-tested stretch and storage for transitional temps.

$138
Color: Desert Tan
Inseam:
Size:
Size guide
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Top features
Guide-tested, guide-approved
4-way stretch double weave
Articulated double knees
Description

Guide-tested. Guide-approved. Built to excel in transitional temps, this midweight fishing pant is cut from a quick-dry, double-woven fabric infused with 4-way stretch.

Articulated double knee panels allow for unencumbered movement, while the assortment of pockets keep all your essentials easily accessible. Two front thigh pockets offer quick and convenient storage, two secure pockets at the rear (one zip, one snap) safely hold can’t-lose valuables, plus two front hand pockets stash the rest of your gear. A PFAS-free DWR finish keeps water at bay—without contaminating your favorite fishing hole with forever chemicals.

Perfect for
Fishing
Boat & bank days.
On the water
Sun & salt.
Shoulder season
Crisp mornings & evenings.
Features
  • Guide-tested, guide-approved. Designed and proven on the water by people who fish for a living.
  • 4-way stretch double weave. Quick-dry midweight fabric that moves through casts, climbs, and wading.
  • Articulated double knees. Reinforced, articulated knee panels add durability without restricting movement.
  • PFAS-free DWR. Keeps water at bay without forever chemicals in your favorite fishing hole.
  • Storage for everything. Thigh, hand, and secure rear pockets keep essentials organized and accessible.
Size & Fit
Slim
Regular
Relaxed

Standard fit with room to move. True to size for most.

  • True to size with added stretch that moves with you
  • 14.5” leg opening
Open size guide
Materials
  • Midweight, 4-way stretch double weave with PFAS-free DWR.
  • 88% Recycled Nylon / 12% Spandex.
  • Fabric Weight (GSM): 186.
About the brand

Free Fly started with a love of the water and a mission to make natural, breathable clothing that keeps up. Their bamboo-based fabrics are buttery soft and built for comfort from sunrise paddle to sunset hang. At Mountain Sports, we love Free Fly because it’s made for life lived outside — easygoing, effortless, and always adventure-ready.

Shop all Free Fly

SKU MSFGUIDP-049
Size guide

Free Fly Size Chart - Men's Apparel

Free Fly Sizing Chart

All measurements are in inches and reflect body measurements. If you are in between sizes, size up for comfort.

Men's Size Guide (Men's Apparel - single chart for tops and bottoms):

Alpha Sizes Numeric Sizes Chest Waist Hip Sleeve
S 30–31 36–38 30–32 34–37 32–33
M 32–33 38–40 32–34 37–39 33–34
L 34–35 41–43 35–37 40–42 34–35
XL 36–38 44–46 38–40 43–45 35–36
XXL 40 47–49 41–43 46–48 36–37
3XL 50–52 44–46 49–51 36–37

Numeric Sizes are waist equivalents. How to measure: Chest - circumference at the widest part of the chest, about 1" down from armpit; Sleeve - with arm slightly bent, from center back neck to shoulder, down arm to wrist bone; True Waist - around the natural waist, narrowest part of the torso; Hip - around the fullest part of the hips. Inseam length is listed on each product page.
Performance

How it ranks across conditions.

Calibrated against comparable products we stock, so you can compare like for like.

Stretch

Low
Moderate
High
Top

4-way stretch double weave moves through casts and scrambles.

Quick-dry

Low
Moderate
High
Top

Quick-dry fabric with PFAS-free DWR shrugs off spray.

Breathability

Low
Moderate
High
Top

Midweight 186 GSM double weave breathes well in transitional temps.

Best for

Is this right for you?

Guide days on the water

Quick-dry stretch, double knees, and pockets for tools — built to fish hard.

Not for: Mostly wearing them around town? Try the Stretch Canvas 5 Pocket Pant

Shoulder-season hikes

Midweight double weave excels in transitional temps, town or trail.

Not for: Hot-weather river days instead? See the Latitude Short

Full spec sheet

Technical Specs

Fabric88% Recycled Nylon / 12% Spandex
Fabric weight186 GSM
FinishPFAS-free DWR
Inseam30" or 32"
Leg opening14.5"
KneesArticulated double panels
Sizes30–40
Questions, answered

Before you buy.

Pulled from chats, emails and store visits. The things people actually ask us before they buy. Don't see yours?

Ask a question
How do Free Fly bottoms fit — should I size up or down?

Most Free Fly bottoms run true to size with stretch built into the fabric, so your usual size is the right call for most people. Fits do vary by style — from the Breeze line's relaxed cut to the slimmer Anchor 5 Pocket — so check the Size & Fit notes and the size guide on each product page before ordering.

How much storage does the South Fork Guide Pant have?

Plenty: two front hand pockets, two quick-access front thigh pockets, a utility drop-in pocket at the back right for a knife or tools, and secure rear pockets for can't-lose valuables.

How should I wash and dry these?

Machine wash cold with like colors on a gentle cycle, then tumble dry low or hang dry. Skip bleach and fabric softener — they break down stretch fibers. Always check the sewn-in care label; some fabrics, like Free Fly's stretch canvas, do best washed inside out and hung to dry.

Find the right one for you

How the South Fork Guide Pant compares

Head-to-head against the closest alternatives we stock, so you can see where this one sits before you commit.

Feature
Free Fly
Stretch Canvas 5 Pocket
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Anchor 5 Pocket Pant
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Canvas Field Pant
FabricStretch canvas (cotton / bamboo)Cotton twillCotton twillHeavyweight cotton canvas
FeelRugged + soft stretchGarment-washed softGarment-washed softBroken-in canvas
FitStraight legClassic chinoSlim five-pocketRugged work pant
Signature pocketClassic 5-pocketHidden thigh zipBack drop-insKnife pocket
Inseam—32"32"32"
Best forEveryday casualOffice & travelJeans alternativeYard & job site
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Shipped nationwide since '96. Some exclusions apply.