Verdict from 2 experts and 100+ user reviews

6 reasons to buy

  • Hordes of buyers are delighted with the comfort level of the Under Armour Infil Ops GTX.
  • Numerous purchasers hail the hiking boot’s lightness as nothing short of incredible.
  • Its breathability is top-notch, as testified by a bunch of outdoor enthusiasts.
  • A handful of online reviewers say that this Under Armour product doesn't have a long break-in period.
  • The Vibram outsole’s grip performance has left a good impression on several consumers.
  • The minority reports that the Infil Ops GTX conquered various wet trail conditions.

1 reason not to buy

  • Several adventurers are dismayed with the narrow fit of this hiking boot.

Bottom line

Outdoor lovers who are after a comfortable and lightweight pair may find what they’re looking for in the Under Armour Infil Ops GTX. Its breathability, traction, and waterproofness are also handy attributes for any adventure. However, the footgear’s narrow fit might not be suitable for everyone. All in all, the Infil Ops GTX from Under Armour can be a great addition to any trip because of the excellent qualities it offers.

Tip: see the best hiking boots.

Good to know

  • Under Armour’s Infil Ops GTX delivers protection and lightweight performance for hiking excursions. Its high-cut textile upper is lined with a Gore-Tex membrane and reinforced with an Anafoam overlay to counter abrasive elements and wet conditions.
  • The footgear’s full-length ethylene-vinyl acetate (EVA) midsole is paired with an internal wishbone plate made of thermoplastic polyurethane (TPU). This combination grants cushioning, stability, and energy return. Its Vibram outsole secures the user’s footing over uneven terrain.

The Under Armour Infil Ops GTX is fairly true-to-size hiking boot for men. It is available only in standard width. Whole and half sizing options are offered. The boot’s lace closure permits a secure and personalized lockdown. From the midfoot to the forefoot area, the upper contains anatomically molded Anafoam overlays for a snug fit.

Providing traction on rugged terrain is the Under Armour Infil Ops GTX’s Vibram outsole. Its pattern of aggressive lugs renders multi-directional grip on dry and slick surfaces. A heel brake is integrated into this component for enhanced control in downhill conditions. It’s also made of Megagrip, a rubber compound that’s engineered with an emphasis on durability.

This hiking boot from Under Armour sports a midsole made of lightweight EVA foam for cushioning and rebound. It works in tandem with an internal wishbone TPU plate to give the user enough rigidity over rugged terrain.

The Infil Ops GTX is equipped with a TPU stability chassis for better heel lockdown and support. The boot’s removable footbed is responsible for underfoot comfort and arch support. Also, this Under Armour product is imbued with Cupron Anti-Fungal Pro Fibers, which eliminate odor-causing microbes.

The Under Armour Infil Ops GTX’s high-abrasion textile upper contains Anafoam overlays for fit precision. It is lined with a Gore-Tex membrane to keep water out while maintaining ample breathability. A rubber toe cap is incorporated into the forefoot area to amplify durability and provide protection from accidental bumps.

The boot’s closure system consists of combination eyelets. Its collar and tongue are padded to promote comfort. Also, a pull tab is positioned at the back of the collar to facilitate an easy on and off.


How Under Armour Infil Ops GTX ranks compared to all other shoes
Top 29% hiking boots
All hiking boots
Top 34% Under Armour hiking boots
All Under Armour hiking boots
Top 26% day hiking hiking boots
All day hiking hiking boots


The current trend of Under Armour Infil Ops GTX.
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Paul Ronto
Paul Ronto

Over the past 20 years, Paul has climbed, hiked, and ran all over the world. He has summited peaks throughout the Americas, trekked through Africa, and tested his endurance in 24-hour trail races as well as 6 marathons. On average, he runs 30-50 miles a week in the foothills of Northern Colorado. His research is regularly cited in The New York Times, Washington Post, National Geographic, etc. On top of this, Paul is leading the running shoe lab where he cuts shoes apart and analyses every detail of the shoes that you might buy.