TerraFlex II - Trail Running and Hiking Shoe - Men

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Product Description

“The TerraFlex II is sturdy and protective against outdoor terrain. I really like it for running sprints and up hills and dirt trails. It’s a really great outdoor shoe.” – Chase B.

The TerraFlex II is an update to the best-selling original featuring a more abrasion and water-resistant upper — with no sacrifices to any of the trail-gripping traction, secure fit, and all-day comfort that people loved about the TerraFlex.

TerraFlex II - Lightweight, barefoot-friendly, minimalist trail shoe. NEW for 2022



Whether you’re running, hiking, or simply taking a casual stroll off the beaten path, the TerraFlex II helps you feel more connected to the ground beneath your feet.

The rugged 6.5mm FeelTrue® sole, including 4mm lugs for confident traction, provides the perfect combination of protection and ground feel for any off-road activity. The embedded 3mm layer of TrailFoam™ provides added comfort and protection and the toe bumper helps guard against unexpected bumps you encounter along your way.

Finally, our huarache-inspired heel cinch and mid-foot webbing remain fully adjustable, giving you a secure and stable fit throughout your adventure, while the iconic wider toe box lets your toes splay and flex to empower your stride.


At just 8.9 oz each for a men’s size 9, the TerraFlex II is even lighter than the original, placing it just between our ultra-lightweight Mesa Trail running shoe and the multi-purpose DayLite Hiker Fusion boot. This is one hiking shoe that won’t slow you down, keeping you going from trailhead to summit.


If your feet don’t feel as good at the end of the day as they did in the beginning, you haven’t tried the TerraFlex II.


Life-changing comfort and superior performance come from letting your feet do what’s natural – bend, move, flex and feel.


All Xero Shoes feature a wider, foot-shaped toe box that lets your toes spread and relax, a non-elevated “zero drop” heel for proper posture, low-to-the-ground design for perfect balance and agility, and a flexible sole that gives you “just right” protection so you can bend, move, flex, and safely Feel the World® in total comfort.


The TerraFlex II runs fairly true to size.

We recommend your usual size.

FREE EXCHANGES: Most people find our size recommendation gives them a proper fit, but just in case, we have a free exchange program for all US orders.

*If you normally buy a Euro, UK or JP Size, check out the handy conversion charts below.

Men’s Sizing Chart:

US SizesEU SizesUK SizesJP Sizes
6.5 39.5 5.5 24.5
7 40 6 25
7.5 40.5 6.5 25.5
8 41 7 26
8.5 41.5 7.5 26.5
9 42 8 27
9.5 42.5 8.5 27.5
10 43 9 28
10.5 43.5 9.5 28.5
11 44 10 29
11.5 44.5 10.5 29.5
12 45 11 30
12.5 45.5 11.5 30.5
13 46 12 31
14 47 13 32
15 48 14 33

6 Reviews Hide Reviews Show Reviews

  • 4
    Bulky, not enough feeling, but still quite good.

    Posted by Justin P. on 5th Mar 2024

    This is my second pair of Xero Shoes, the first being Mesa Trail I. After trying the TerraFlex II it becomes clear that I should have bought Mesa Trail II instead. TerraFlex II feels bulky and has way less ground feel than I was expecting. Still much better than workboots for working and walking around my property which has very diverse terrain - There's no going back.

  • 5
    Just what I wanted

    Posted by Shane on 7th Feb 2024

    I wear Prio All-day for work, and HFS for running and exercise. I wanted something as comfortable and with the same great features but with a bit more support and grip for hiking. The TerraFlex II tick all these boxes. Love them.

  • 5

    Posted by James on 20th Nov 2023

    2nd pair of Xero shoes in 4 weeks!! Went for a Ruck & these shoes performed perfectly!!

  • 5
    Trail running

    Posted by James on 2nd Aug 2023

    Super comfortable Great grip on trail

  • 5
    Terra Flex 2

    Posted by Jacqui James on 20th Sep 2022

    I love these shoes, I feel like I can climb a wall almost in them, they feel so grippy, lightweight, comfortable and look cool. Had a great experience with buying them too. It took me 2 goes to get my size right. Hard being an Amazon woman with big feet so I settle for the men's size 10, they are awesome. This company were so accommodating.

  • 5
    Very versatile and comfy

    Posted by Adam Palmer on 24th Aug 2022

    I bought these as a trail/hiking shoe and they work grea for both. I usually use the mesa trail as it is a bit lighter, but I find them to be a bit flimsy in Tasmanian bush. The Terraflex is much more robust without adding too much weight. One downfall though is that the sole is a bit slippery in the beginning before they wear in, I almost came unstuck a few times until about a week of hard use. Great shoes, I would highly recommend them to anyone needing a hiking shoe too.