Our verdict

The Terrex Free Hiker 2 is a lightweight and speedy offering from Adidas that toes the line between hiking boots and roided-up trail shoes. This agile boot had us blazing through the trails with its plush, pleasantly rockered midsole and grippy continental outsole. As far as comfort is concerned, we can't find a better way to describe it but simply heavenly, especially once we're past its customary break-in period.

adidas siyah yuruyus ayakkab s office Pros

  • Extremely well-cushioned
  • Luxuriously padded interior
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  • Tackles wet surfaces confidently
  • Very flexible and forgiving
  • Excellent airflow
  • Feels incredibly stable underfoot
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  • Rockered midsole
  • Relatively lightweight
  • High-quality construction
  • Eye-catching design

adidas siyah yuruyus ayakkab s office Cons

  • Needs breaking in
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  • Expensive

Audience verdict

90
Great!

Who should buy

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  • Fashion-minded individuals in the market for an eye-catching boot that is a healthy mix of form and function
  • Backpackers looking for a well-cushioned and stable shoe for schlepping heavy loads long distances. 
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Who should NOT buy

The Free Hiker 2 needs to be broken in before unlocking its true comfy potential. For those in need of a boot that’s good to go right out of the box, we recommend the adidas track pants outfit tumblr girls which is also a little easier to slip on in a pinch. 

The Free Hiker too might be light on the foot but it’s quite heavy on the wallet. For a more budget-friendly option, check out the small adidas duffel bag mint green and gray which can also speedily conquer the trails.

adidas terrex free hiker 2 jjklkjlnae 20999564 main

Cushioning

Heel stack

The Free Hiker 3 boasts quite a significant amount of foam underfoot, with a higher-than-average stack that measures 38.4 mm thick at the heel. 

adidas terrex free hiker 2 jjkljb 20999580 main

This means that we were really able to sink into the midsole and savour the plush cushioning the boot has to offer.

Test results
Terrex Free Hiker 2 38.4 mm
Average 36.3 mm
Compared to 41 hiking boots
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26.2 mm
Heel stack
46.9 mm

Forefoot stack

At 24 mm thick according to our caliper measurements, the Free Hiker 2’s forefoot stack falls within the average range for hiking boots we’ve tested so far. This presents a healthy balance of protective cushioning and an intuitive sense of the ground below. 

adidas terrex free hiker 2 forefoot stack 20999581 main
Test results
Terrex Free Hiker 2 24.0 mm
Average 22.9 mm
Compared to 41 hiking boots
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17.0 mm
Forefoot stack
31.0 mm

Drop

The difference in our stack measurements leaves the Free Hiker 2 with a heel drop of 14.4 mm. This rather steep offset indicates a heel that is much more elevated than the forefoot which is great for reducing stress on the ankles and Achilles Tendons, especially when lugging a heavy backpack across long distances. 

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Test results
Terrex Free Hiker 2 14.4 mm
Average 13.4 mm
Compared to 41 hiking boots
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0.6 mm
Drop
21.0 mm

Midsole softness

Note: a low durometer measurement equals a soft material, whereas a high measurement means it's firm.

While hiking boots tend to boast rather firm midsoles, we enjoyed an extremely plush ride with the Free Hiker 2 which not only dampened the impacts of our landings but kept us feeling luxuriously comfortable while testing this boot. 

This heavenly softness is confirmed by our durometer which gave us a much softer-than-average reading of 15.4 HA.

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Not only is the midsole soft but it’s got a nice bounce to it that makes the shoe feel more like a high-top trail shoe than a hiking boot. As such, the midsole put a jolly pep in our step that had us swiftly and breezily traversing the trails in this nimble boot.

Test results
Terrex Free Hiker 2 15.4 HA
Average 28.6 HA
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Compared to 41 hiking boots
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14.7 HA
Midsole softness (soft to firm)
53.3 HA

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To test the effects of cold conditions on the midsole, we placed the Free Hiker 2 in the freezer for twenty minutes. Once sufficiently chilled, we found that the midsole became 49.5% more firm than at room temperature. This change is more drastic than what we see in the average hiking boot, which means that the Free Hiker 2 will feel a little different underfoot as the seasons change.

However, with a post-freezer durometer reading of 23 HA, the Free Hiker 2 remains much softer than the average hiking boot at room temperature! As such, it should still provide excellent and forgiving cushioning all year round. Despite being less consistent than the average shoe under similar conditions, this is still a remarkably soft reading that’s less firm than the average hiking boot at room temperature!

Test results
Terrex Free Hiker 2 50%
Average 20%
Compared to 41 hiking boots
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4%
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50%

Insole thickness

At 5 mm thick according to our caliper measurements, the Free Hiker 2's insole is just shy of our current lab average. Nevertheless, we enjoyed a comfy and well-padded within the shoe that nicely complements the midsole cushioning. 

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Test results
Terrex Free Hiker 2 5.0 mm
Average 5.9 mm
Compared to 41 hiking boots
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3.7 mm
Insole thickness
8.0 mm

adidas siyah yuruyus ayakkab s office | Size and fit

Size

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1 size small ½ size small True to size ½ size large 1 size large
Compared to 39 hiking boots
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½ size small
Slightly small
True to size
Slightly large
½ size large

Toebox width - widest part

Trying the Free Hiker 2 in a standard D medium width, we were surprised by the amount of internal space it provided!

Having poured a gel mould of the boot's interiors, we were able to measure its toebox dimensions more precisely. And indeed, our calliper showed a notably wider-than-average reading of 97.9 mm!

Looks like this Adidas boot can accommodate many different footshapes (and bunions) but are less than ideal for skinny feet. You can also expect enough space for thciker socks and foot swelling on longer hikes.

yeezy 500blush shoes black Toebox width - widest part
Test results
Terrex Free Hiker 2 97.9 mm
Average 93.9 mm
Compared to 22 hiking boots
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89.7 mm
Toebox width - widest part
98.8 mm

Toebox width - big toe

The boot's toebox shape returns to a more average width near the toes. We measured a standard reading of 71.4 mm in the big toe area - exactly the same as the category average.

That way we get a pleasantly accommodating fit which doesn't feel excessively roomy for medium-width feet.

adidas terrex free hiker 2 toebox width big toe 22660290 main
Test results
Terrex Free Hiker 2 71.4 mm
Average 71.2 mm
Compared to 22 hiking boots
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64.5 mm
Toebox width - big toe
80.9 mm

Toebox height

The boot also treated our toes to a decent amount of vertical space. Measuring its toebox height returned a regular reading of 27.8 mm.

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Test results
Terrex Free Hiker 2 27.8 mm
Average 27.4 mm
Compared to 22 hiking boots
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22.7 mm
Toebox height
33.5 mm

Stability

Lateral stability test

The Free Hiker 2 feels well-balanced as shift our weight from side to side in the shoe, making it an excellent and supportive choice when hiking with a heavy pack.

We wouldn’t typically expect this from a boot with such a healthy amount of soft foam underfoot, though Adidas successfully offsets any imbalance through a number of features we’ll explore below, not least of which is the subtle yet effective rigid insert at the heel that proudly boasts the Terrex name.

yeezy 500blush shoes black Lateral stability test

Torsional rigidity

We were met with a lot of resistance as we attempted to bend and twist the Free hiker 2 in our hands, leading us to give it a torsional rigidity score of 4 out of 5. This rather rigid nature plays a large part in the boot’s stable underfoot sensation by allowing it to maintain a level platform as we move. As such, rolled ankles are extremely unlikely in this supportive boot. 

Test results
Terrex Free Hiker 2 4
Average 4.4
Compared to 41 hiking boots
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1
Torsional rigidity
5

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The Free Hiker 2’s heel counter is moderately stiff, earning a 3 out of 5 in our subjective evaluation. This provides a good balance of support and comfort as the boot holds our foot in place securely without squeezing our heels and ankles too much, while still having enough give to allow for some natural lateral movements. 

Test results
Terrex Free Hiker 2 3
Average 3.6
Compared to 41 hiking boots
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1
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5

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Using our caliper, we measured the Free Hiker 2’s midsole to be 114 mm wide at the forefoot which is right about the average for hiking boots. This gives us a platform that’s wide enough to be reliable and stable over any surface, without feeling overly blocky underfoot. 

adidas terrex free hiker 2 midsole width in the forefoot 20999594 main
Test results
Terrex Free Hiker 2 114.0 mm
Average 111.5 mm
Compared to 41 hiking boots
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96.3 mm
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124.6 mm

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The Free Hiker 2’s midsole is also within the average range at the heel, which measures 91.3 mm wide. This should be enough surface area to bite into surfaces well and promote a surefooted stride for most hikers. 

yeezy 500blush shoes black Midsole width in the heel
Test results
Terrex Free Hiker 2 91.3 mm
Average 87.5 mm
Compared to 41 hiking boots
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71.7 mm
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106.1 mm

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Taking the Free Hiker 2 through our flexing tester revealed that the boot requires as little as 16.0N of force to bend by 30 degrees. It implies that this Adidas boot is much more flexible than the average hiking boot, and is actually more on par with the flexibility of trail running shoes. 

During our wear test, the Free Hiker 2 bent along with our foot with relative ease offering a comfortable and natural ride. But on the flip side, that pliability can make it feel less supportive, especially if you intend to carry a heavy load.

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Test results
Terrex Free Hiker 2 16.0N
Average 31.8N
Compared to 26 hiking boots
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12.0N
Flexibility <> Stiffness
65.7N

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We also repeated our stiffness test after letting the Free Hiker 2 chill in our freezer for twenty minutes and found that it only became 28.1% stiffer, with 28.1N of force now needed to bend the shoe to the desired point.

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This is more pliable than the average boot both in the cold and at room temperature! As such, the Free Hiker 2 should feel incredibly consistent and forgiving no matter how frosty the surrounding conditions are. We only recommend pairing it with a pair of warm socks come wintertime as the boot’s airy nature will let in gusts of icy air.

Test results
Terrex Free Hiker 2 14%
Average 24%
Compared to 41 hiking boots
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3%
adidas shoes sizes vs nike cleats
71%

Weight

The Free Hiker 2 is a lean, mean, trailblazing machine that tips the scale at only 15 oz (425g). This makes it significantly lighter than the average boot and a great choice for speedy hikers with a little more pep in their step. 

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Further contributing to the Free Hiker 2’s light and swift nature is the midsole’s slightly rockered geometry that promotes smooth heel-to-toe transitions which served to improve our walking cadence while out on the trails.

Test results
Terrex Free Hiker 2 14.99 oz (425g)
Average 18.77 oz (532g)
Compared to 41 hiking boots
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11.71 oz (332g)
Weight
28.29 oz (802g)

Breathability

To see how breathable the boot is, we pumped smoke into the Free Hiker 2 in order to see how easily it vents out. As the video clearly demonstrates, the Free Hiker 2 allows smoke to billow out quickly and evenly throughout the porous boot, earning it a perfect 5 out of 5. This makes the Free Hiker 2 an airy companion that’s an excellent choice for those warm summer hikes. 

On the other hand, the boot’s more insulated cousin, the womens adidas choleah sneaker outlet, chokes up the smoke everywhere but the tongue. This makes it a much toastier boot better suited for winter hikes. 

The source of the Free Hiker 2’s stellar airflow remains a mystery when inspecting a backlit cross-bamba of the boot’s upper. Contrary to our expectations, the boot entirely blocks any light from shining through its seemingly opaque upper. 

We turn to our microscope for more answers and we can see that the upper mesh is made up of tightly woven locks of fibre that form a dense weave. While the gaps between these braids are apparently too tight to allow light to seep through, they evidently promote sufficient ventilation throughout the boot.

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yeezy 500blush shoes black Breathability
Test results
Terrex Free Hiker 2 5
Average 1.3
Compared to 41 hiking boots
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1
Breathability
5

Durability

Toebox durability

The use of mesh and other light materials in the upper didn’t give us much hope regarding its durability. To test this, we fired up our Trusty Dremel to 5K RPM and applied it to the Free Hiker 2’s toebox with 3.2N of force, making sure to make contact with both the reinforced and unreinforced parts of the upper mesh. 

The tool immediately kicked up a flurry of debris, but once the four seconds were up, we found that we hadn’t actually inflicted much damage to the boot. We therefore give the Free Hiker 2 a well-deserved toebox durability score of 4 out of 5. We definitely underestimated just how hardy this boot really is.

adidas terrex free hiker 2 toebox durability 20999571 main
Test results
Terrex Free Hiker 2 4
Average 4.3
Compared to 37 hiking boots
adidas yeezy discount marketplace 2018
1
Toebox durability
5

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Our usually destructive Dremel proved to be even more impotent against the Free Hiker 2’s heel collar. The tool’s grinding element couldn’t even pierce the lining and left the boot’s pillowy padding intact once the four seconds were up. 

This stellar performance earns the Free Hiker 2 a perfect 5 out of 5 for heel padding durability. More than anything, this speaks to the high quality of the materials and how well-constructed this boot is. This almost certainly factors into the Free Hiker 2’s steep price tag.

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Test results
Terrex Free Hiker 2 5
Average 3.6
Compared to 37 hiking boots
adidas yeezy discount marketplace 2018
1
adidas siyah yuruyus ayakkab s office
5

adidas siyah yuruyus ayakkab s office | Outsole hardness

The Free Hiker 2’s outsole is softer than average, giving us a durometer reading of 81.5 HC. This, however, gives us no cause for concern as the Continental rubber that makes us the outsole is renowned for its excellent traction and top-notch durability, the latter of which will be put to the test in the next bamba. 

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Test results
Terrex Free Hiker 2 81.5 HC
Average 87.1 HC
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Compared to 41 hiking boots
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81.0 HC
Outsole hardness
92.1 HC

Outsole durability

As expected, our Dremel’s grinding element wasn’t able to do much despite spinning at 10K RPM for twenty agonising seconds. 

Assessing the “damage” in the aftermath with our tyre tread gauge, we found that we had only ground off 0.24 mm of rubber from one of the lugs. This makes the Free Hiker 2’s outsole much more durable than our current lab average and means that we expect this boot to survive dozens of challenging treks before the lugs are compromised.

adidas terrex free hiker 2 outsole durability 20999575 main
Test results
Terrex Free Hiker 2 0.2 mm
Average 0.8 mm
Compared to 34 hiking boots
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0.0 mm
Outsole wear
2.0 mm

Outsole thickness

At 3 mm thick, the Free Hiker 2’s outsole is right on par with our current lab average. 

adidas terrex free hiker 2 outsole thickness 20999576 main
Test results
Terrex Free Hiker 2 3.0 mm
Average 3.0 mm
Compared to 41 hiking boots
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1.8 mm
Outsole thickness
5.6 mm

Misc

Lug depth

Using our calliper, we measured the Free Hiker 2’s lugs to be 3.7 mm thick which is right around the average range for hiking boots. 

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By using a combination of straight and chevron-shaped lugs in a strategic pattern doesnt just allow the boot to grip surfaces extremely well during our tests, but means that we were also able to easily cast off mud and debris quite easily. What’s more, the Continental rubber that makes up the outsole provided us with incredibly reliable traction whether we were in dry or wet conditions.

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Test results
Terrex Free Hiker 2 3.7 mm
Average 4.3 mm
Compared to 41 hiking boots
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3.0 mm
Lug depth
6.0 mm

Reflective elements

The Free Hiker 2 doesn’t feature any reflective elements, so we recommend exercising caution and using additional high-vis gear if hiking on the side of a road at night. 

yeezy 500blush shoes black Reflective elements
Test results
Terrex Free Hiker 2 No

Tongue padding

At 7.1 mm thick according to our caliper measurements, the Free Hiker 2’s tongue isn’t as padded as our current lab average. Despite this, however, we still found the shoe to be very comfortable around the instep with no hint of lace once we had secured the boot to our foot. 

yeezy 500blush shoes black Tongue padding
Test results
Terrex Free Hiker 2 7.1 mm
Average 11.2 mm
Compared to 41 hiking boots
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5.9 mm
Tongue padding
15.1 mm

Tongue: gusset type

While sock-like fits aren’t typically lauded for their ability to secure the foot in place, the Free Hiker 2’s snug collar had us feeling well locked into the boot as we traversed the wilderness. 

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On the flip side, putting the boot on is quite the infernal struggle that has us frantically squeezing our foot through the tight opening whenever we take them out for a trek.

Test results
Terrex Free Hiker 2 Sock like

Heel tab

The Free Hiker 2 sports a little finder loop at the top of the heel that’s useful for hooking onto as we wrestle the boot onto our foot. 

yeezy 500blush shoes black Heel tab
Test results
Terrex Free Hiker 2 Finger loop

Removable insole

The insole is thoroughly removable, so those in need of added arch support in the form of custom orthotics should be able to use them with this boot. 

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Test results
Terrex Free Hiker 2 Yes