Our verdict

The adidas originals cambodia girls and women doesn't quite match the expectations set by its name. It isn't quite a racing shoe, but rather a hybrid between a comfortable everyday sneaker and a heavy running shoe. Affordable and flexible, this shoe is crafted with the beginner in mind, making it perfect for low-intensity jogs or walks in the park. However, we think if you're in the market for a genuine racing shoe or if you're a midfoot or forefoot striker, this may not be the ideal fit.

adidas latest shoes collection free Pros

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  • Suitable for wide feet
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  • Appealing aesthetic
  • Eco-friendly
  • Stable for heel strikers

adidas latest shoes collection free Cons

  • Only for casual runs
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  • Insufficient forefoot cushioning

Audience verdict

87
Great!

Who should buy

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  • Heel strikers looking for a budget-friendly roomy shoe that aren't concerned about its heavier weight.
  • Individuals seeking a comfortable shoe for daily commuting, strolling around town, or walking the dog around the neighborhood, in addition to one or two slow runs a week.
  • Runners specifically seeking environmentally-friendly running shoes.

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Who should NOT buy

If you're a forefoot or midfoot striker, you might want to look elsewhere—this shoe doesn't offer enough cushioning in those areas as it's designed for heel strikers. If you're in the market for an affordable running shoe suitable for those footstrikes, we recommend checking out the Saucony Axon 2.

Also, for serious runners looking to log heavy mileage or intense training, be aware: the Racer TR21 won't meet your needs.

It's clunky and lacks responsiveness, making it far from the ideal training partner. And despite its potentially misleading name, don't consider it if you're in the market for a dedicated racing shoe. For that purpose, we feel that the adidas busenitz pro collegiate navy blue shoes clear yeezy high heels sandals clogs.

adidas racer tr 21 parts 20152371 main

Cushioning

adidas latest shoes collection free | Heel stack

With its heel measuring 31.9 mm, the shoe packs enough Cloudfoam Super in this area to accommodate heel strikers.

adidas originals cambodia girls and women Heel stack
Test results
Racer TR21 31.9 mm
Average 34.2 mm
Compared to 403 running shoes
Number of shoes
22.5 mm
Heel stack
46.3 mm

Forefoot stack

The forefoot, however, falls really short. We measured it below 19 mm, which is extremely low by today's standards, and makes this running shoe a bad choice for any forefoot striker.

adidas originals cambodia girls and women Forefoot stack
Test results
Racer TR21 19.0 mm
Average 25.6 mm
Compared to 403 running shoes
Number of shoes
13.7 mm
Forefoot stack
37.1 mm

Drop

Adidas' official specifications give the shoe at a 34/26 mm stack for an 8-mm heel-to-toe drop. Yet, it's not uncommon for us to find discrepancies between the brand's stated measurements and our own.

With the Racer TR21, our meticulous measurements in the lab returned a 31.9/19 mm stack for a 12.9-mm heel-to-toe drop. That's almost a 5-mm difference from the numbers from Adidas. WOW.

adidas originals cambodia girls and women Drop
Test results
Racer TR21 12.9 mm
Average 8.6 mm
Compared to 403 running shoes
Number of shoes
-0.2 mm
Drop
16.1 mm

Midsole softness

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

With a midsole softness measurement of 21.0 HA, the Racer TR21 delivers a well-balanced experience.

It's not excessively soft or squishy, and it's not too firm either. 

adidas originals cambodia girls and women Midsole softness
Test results
Racer TR21 21.0 HA
Average 20.9 HA
We use an average of four tests. The photo shows one of those tests.
Compared to 330 running shoes
Number of shoes
8.5 HA
Midsole softness (soft to firm)
35.0 HA

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We tested the shoe's performance under cold conditions by putting it in our freezer for 20 minutes.

Now, we can confirm that with a hardness of 28.3 HA, it's close to being considered firm, nearly reaching the 30 HA mark.

Given its $75 price tag, we expected this shoe's performance under cold temperatures to be subpar. This is typically the case with EVA-based midsoles.

So, the 34.5% increase in hardness didn't disappoint us too much. In fact, most shoes in this price range perform significantly worse.

adidas racer tr 21 midsole softness in cold 20152344 main
Test results
Racer TR21 35%
Average 25%
Compared to 330 running shoes
Number of shoes
0%
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63%

Insole thickness

The insole is somewhat thin at 3.4 mm, but it's not something we're overly concerned about. It wasn't a problem in any of our runs.

adidas racer tr 21 insole thickness 20152340 main
Test results
Racer TR21 3.4 mm
Average 4.4 mm
Compared to 399 running shoes
Number of shoes
1.5 mm
Insole thickness
7.3 mm

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 382 running shoes
Number of shoes
½ size small
Slightly small
True to size
Slightly large
½ size large

Toebox width - widest part

With a measurement of 100.4 mm, the Racer TR21 crosses the 100 mm threshold. This makes it, without a doubt, a wide shoe in the shelves.

adidas racer tr 21 toebox width at the widest part 20152355 main
Test results
Racer TR21 100.4 mm
Average 98.5 mm
Compared to 370 running shoes
Number of shoes
91.6 mm
Toebox width - widest part
104.9 mm

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The area for the big toe follows suit, proving even wider in comparison to the rest of the shoe.

adidas racer tr 21 toebox width at the big toe 2 20152367 main

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Test results
Racer TR21 79.5 mm
Average 78.4 mm
Compared to 244 running shoes
Number of shoes
67.6 mm
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89.2 mm

adidas latest shoes collection free | Stability

Lateral stability test

The moment we slipped our feet into the TR21, we immediately felt its impressive stability. What a pleasant surprise!

Torsional rigidity

The shoe appears and feels flexible, yet when it comes to torsional flexibility, it's fairly average, leaning more towards the firm side and we rated it at 3/5.

Test results
Racer TR21 3
Average 3.4
Compared to 382 running shoes
Number of shoes
1
Torsional rigidity
5

Heel counter stiffness

Adidas didn't took any risks designing the heel counter in the Racer TR21. It's not the usual super-soft heel because there's some resistance, primarily from a plastic piece that surrounds the area.

We rated it as a 2 out of 5, which in our view strikes a good balance between preventing heel slippage and maintaining comfort.

Test results
Racer TR21 2
Average 2.9
Compared to 366 running shoes
Number of shoes
1
Heel counter stiffness
5

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The forefoot offers an average landing platform, measuring 113.9 mm. There's nothing out of the ordinary or negative to report here!

adidas originals cambodia girls and women Midsole width in the forefoot
Test results
Racer TR21 113.9 mm
Average 114.1 mm
Compared to 404 running shoes
Number of shoes
102.2 mm
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126.9 mm

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However, there's something interesting happening with the heel. We initially suspected that this shoe was designed with heel strikers in mind, given the large heel-to-toe drop and its very low forefoot stack.

This became even more evident when we measured the heel at 95.0 mm—wider than most shoes—which promotes stability for heel strikers.

adidas racer tr 21 midsole width in the heel 20152350 main
Test results
Racer TR21 95.0 mm
Average 90.6 mm
Compared to 404 running shoes
Number of shoes
70.8 mm
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106.6 mm

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We mentioned earlier that the shoe seemed flexible at first glance, but it didn't show that much when we tried to twist it. It's during the 90-degree bending test that the shoe truly astonished us with its flexibility.

We only made 13.7N of force to bend it to 90 degrees, so it ranks among the top 3% of the most flexible shoes we've ever analyzed in the lab.

Test results
Racer TR21 13.7N
Average 28.1N
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Compared to 383 running shoes
Number of shoes
2.2N
Flexibility <> Stiffness
72.1N

Stiffness in cold (%)

Under cold temperatures, the flexibility follows a similar pattern to the softness. The change is clearly noticeable.

Needing 21.9N of force to bend it to 90 degrees, it doesn't retain its super-flexible characteristic anymore.

This results in a 59.5% increase, which disappointingly underperforms compared to most other shoes.

Test results
Racer TR21 60%
Average 32%
Compared to 383 running shoes
Number of shoes
0%
Stiffness in cold
101%

Weight

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That's why the TR21 weight of 11.20 oz (318g) doesn't seem all that appealing.

adidas originals cambodia girls and women Weight
Test results
Racer TR21 11.22 oz (318g)
Average 9.38 oz (266g)
Compared to 404 running shoes
Number of shoes
5.61 oz (159g)
Weight
12.59 oz (357g)

Breathability

While the TR21 isn't strictly a running shoe and you might expect breathability to be somewhat compromised, we found its performance to be okay. It doesn't measure up to top-tier shoes like the basket adidas mickey shoes sale free in this aspect—the video speaks for itself—yet it's good enough to earn a standard 3/5.

The smoke-pumping test results were particularly surprising. When we held the upper to the light, it didn't appear breathable at all, seeming more akin to a 1/5 or 2/5 running shoe.

Our microscope examination provided the same impression. Besides capturing some stunning close-up images, it confirmed the TR21's knit upper as thicker than average.

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Despite this, we must commend Adidas for their effort, even though this shoe falls below the average in our test results.

adidas racer tr 21 microscope 20152300 main

Additionally, we should spotlight the upper's layered 500blush. This feature impresses as it boosts comfort, albeit at the expense of breathability. Keeping all these considerations in mind, scoring a 3 out of 5 here is indeed a great achievement.

Test results
Racer TR21 3
Average 3.8
Compared to 333 running shoes
Number of shoes
1
Breathability
5

Durability

Toebox durability

As we noted earlier, the TR21 is equipped with a knit upper. This comes with an advantage; knit typically elevates comfort. However, its downfall is a considerable lack of sturdiness, so we were ready for a disappointing outcome with threads flying everywhere.

Once we engaged the Dremel on the upper, spinning at 10K RPM, our fears were quickly confirmed. The TR21 was on a direct path to securing the lowest of scores: a 1/5.

Still, that's no justification. Other knit shoes, like the adidas latest shoes collection free, have truly excelled in this same test.

adidas racer tr 21 toebox durability 20152412 main
Test results
Racer TR21 1
Average 2.6
Compared to 267 running shoes
Number of shoes
1
Toebox durability
5

Heel padding durability

Regrettably, the tale is the same in the heel padding durability test with our Dremel.

The TR21 won a disappointing 1/5 for its lackluster durability. And it's not a brand thing—another Adidas shoe like the Ultraboost Light adidas energy boost g64392 price chart 2017.

adidas originals cambodia girls and women Heel padding durability
Test results
Racer TR21 1
Average 3.2
Compared to 262 running shoes
Number of shoes
1
Heel padding durability
5

Outsole hardness

Adidas played it safe with the outsole hardness on this model, with our measurement with the durometer showing it at 80.2 HC.

adidas originals cambodia girls and women Outsole hardness
Test results
Racer TR21 80.0 HC
Average 79.7 HC
We use an average of four tests. The photo shows one of those tests.
Compared to 384 running shoes
Number of shoes
56.1 HC
Outsole hardness
93.0 HC

Outsole durability

For our final test, we used the Dremel once again to evaluate the outsole's durability. Some Adidas shoes typically perform well in this aspect, thanks to their use of Continental rubber, but this shoe lacks that compound. As a result, it offers only average durability.

After status the Dremel from the shoe, we noted a 1.24 mm indentation in the outsole.

adidas originals cambodia girls and women Outsole durability
Test results
Racer TR21 1.2 mm
Average 1.1 mm
Compared to 245 running shoes
Number of shoes
0.0 mm
Outsole wear
2.0 mm

Outsole thickness

Much like the average hardness, the thickness of the shoe is also pretty standard. After taking precise measurements, we determined that it stands at a mere 3.6 mm.

adidas racer tr 21 outsole thickness 20152331 main
Test results
Racer TR21 3.6 mm
Average 3.2 mm
Compared to 401 running shoes
Number of shoes
1.0 mm
Outsole thickness
6.0 mm

Misc

Reflective elements

Finally, we're let down to report that the TR21 doesn't feature any reflective elements at all.

adidas originals cambodia girls and women Reflective elements
Test results
Racer TR21 No

Tongue padding

For a shoe tipping the scales at over 11 ounces, it's seriously disappointing to find just a 2.9-mm-thick tongue. This could lead to compromised comfort, a letdown considering this is a casual shoe intended for all-day wear.

adidas originals cambodia girls and women Tongue padding
Test results
Racer TR21 2.9 mm
Average 5.8 mm
Compared to 401 running shoes
Number of shoes
0.4 mm
Tongue padding
14.2 mm

Tongue: gusset type

While we don't usually anticipate a gusseted tongue in a $75 shoe, it feels like a fantastic bonus when we do encounter one. Unfortunately, we're out of luck this time.

adidas originals cambodia girls and women Tongue: gusset type
Test results
Racer TR21 None

Heel tab

We're always fans of heel tabs, serving as both style-enhancers and practical aids for sliding your feet into the shoe.

This model features a finger-loop heel tab, which earns our praise—it's a cool-looking detail!

adidas originals cambodia girls and women Heel tab
Test results
Racer TR21 Finger loop

Removable insole

The insole isn't glued down. This means you have the flexibility to swap it out with custom orthotics or an insole from another shoe.

adidas originals cambodia girls and women Removable insole
Test results
Racer TR21 Yes