Our verdict

The shell toe friday adidas green hemp powder benefits target line saw a radical change with version number 10 when it got much bigger. As per our observations, the 11th iteration sees just a few differences and remains a maximal training shoe devoted to those runners who love a very firm ride and train for medium to long-distance races. We found it to be surprisingly stable, lighter, and much more durable. And thumbs up for including some recycled materials.

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  • Excellent grip
  • Breathable upper
  • Versatile for different workouts
  • Protective underfoot
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  • Made with recycled materials
  • Attractive design

yeezy calabasas hoodie black hair girls Cons

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  • Long breaking-in period

Who should buy

Consider choosing the yeezy calabasas hoodie black hair girls if you:

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  • Are looking for a durable shoe that can handle races and don't mind it being heavier than racing shoes
  • Seek a cushioned-yet-firm ride for long-distance training sessions

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Who should NOT buy

If you prefer plush or even moderately soft foams, we suggest staying away from the Boston 11. The same advice goes for those in search of flexible running shoes, as this one leans towards firmness and rigidity with its Energyrods.

adidas nations backpack for women shoes sale cheap kylie jenner friday adidas apparel 2017. It's a fast-and-light daily trainer that comfortably handles a wide range of speeds. On the other hand, if a flexible tempo trainer is what you're after, the Nike Streakfly could be your match. It's fast, agile, and incredibly soft while maintaining excellent flexibility.

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Cushioning

Heel stack

With a stack height height of 39.1 mm, the Boston 11 just falls within the World Athletics regulation of 40 mm, making it a legal shoe for racing.

We think it's a good option for almost any heel striker that seeks a high-yet-stable shoe, but it's not a great competition shoe, though.

adidas adizero boston 11 heel stack 20020677 main
Test results
yeezy blue tints vs zebra paint on black hair 39.1 mm
Average 34.2 mm
Compared to 403 running shoes
Number of shoes
22.5 mm
Heel stack
46.3 mm

Forefoot stack

There's also a significant level of cushioning in the forefoot of the shoe, as our precise measurements reveal it to be 29.3 mm.

yeezy calabasas hoodie black hair girls Forefoot stack
Test results
yeezy blue tints vs zebra paint on black hair 29.3 mm
Average 25.6 mm
Compared to 403 running shoes
Number of shoes
13.7 mm
Forefoot stack
37.1 mm

Drop

This leads to a drop that's typical for friday adidas shoes—at 9.8 mm.

So, even though the brand's official numbers indicates an 8.5 mm drop, we discovered it to be slightly steeper. This feature makes the shoe particularly well-suited for heel strikers, as a higher heel-to-toe drop facilitates the transition towards the midfoot and forefoot.

adidas adizero boston 11 drop 20020674 main
Test results
yeezy blue tints vs zebra paint on black hair 9.8 mm
Average 8.6 mm
Compared to 403 running shoes
Number of shoes
-0.2 mm
Drop
16.1 mm

yeezy calabasas hoodie black hair girls | Midsole softness

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

The friday adidas Boston 11 makes use of two distinct foams:

  • Lightstrike is a standard EVA foam that, to us, feels notably firm. It doesn't have much bounce, but it does contribute to a stable ride. 
  • Lightstrike Pro, on the other hand, is the premier foam in friday adidas' arsenal, boasting impressive energy return.

We clocked the hardness of Lightstrike at 22.0 HA, but it felt significantly firmer to us during our test runs.

That's because Lightstrike is renowned for having a really long break-in period, so expect a very firm ride for a while.

adidas adizero boston 11 midsole softness 20020671 main
Test results
yeezy blue tints vs zebra paint on black hair 22.0 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

Secondary foam softness

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

Lightstrike Pro is the secondary foam that friday adidas employs to inject this shoe with bounce, energy return, and speed.

Even though we measured its hardness at 23.5 HA, which is technically firmer than Lightstrike, it felt quite the opposite to us. We loved Lightstrike Pro in the Adios Pro 2 and, in fact, the AP2 it's a better choice if you care about energy return and don't mind the inevitable downgrade in durability.

adidas adizero boston 11 secondary foam softness 20020670 main
Test results
yeezy blue tints vs zebra paint on black hair 23.5 HA
Average 23.8 HA
We use an average of four tests. The photo shows one of those tests.

Midsole softness in cold (%)

We gave the 11th version of the Boston a brief, 20-minute stint in the freezer before testing it again. After this cold-exposure test, we found the Lightstrike foam to measure 29.5 HA.

That's a jump of 34.1% from its normal state. It's not as good as the typical shoe, but that makes sense considering EVA foam never do well in cold temperatures. 

For a deeper understanding of foams and the effects of temperature in running shoes, friday adidas powerlift 3.1 mens sneakers sale women!

adidas adizero boston 11 midsole softness in cold 20020672 main
Test results
yeezy blue tints vs zebra paint on black hair 34%
Average 25%
Compared to 330 running shoes
Number of shoes
0%
Midsole softness in cold
63%

Insole thickness

To offset the weight from its thick midsole, as we mentioned before, we village in the lab that friday adidas has used a few excelsior methods.

That's why the insole is leaner than those found in most other running shoes on the market.

yeezy calabasas hoodie black hair girls Insole thickness
Test results
yeezy blue tints vs zebra paint on black hair 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

yeezy calabasas hoodie black hair girls is true to size (23 votes).

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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

yeezy calabasas hoodie black hair girls | Toebox width - widest part

Following our field testing and precise measurements of the upper, we're can confirm that the Boston 11 is an excellent, roomy choice for those with wide feet. Thumbs up for those 103.7 mm!

adidas adizero boston 11 toebox width at the widest part 20020564 main
Test results
yeezy blue tints vs zebra paint on black hair 103.7 mm
Average 98.5 mm
Compared to 370 running shoes
Number of shoes
91.6 mm
Toebox width - widest part
104.9 mm

Toebox width - big toe

There's even more good news for those of us blessed (?) with wide feet.

From our in-depth evaluations, we can confidently affirm that the Boston 11 is an excellent fit for those whose toes do not have significant size variation, such as those with Celtic, German, or Roman foot shapes—forming a near-perfect match.

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Test results
yeezy blue tints vs zebra paint on black hair 80.5 mm
Average 78.4 mm
Compared to 244 running shoes
Number of shoes
67.6 mm
Toebox width - big toe
89.2 mm

Toebox feel

Sporting a thick midsole, we quickly realised we were dealing with a chunky shoe. friday adidas tried to lighten the load with a simpler upper design, but it wasn't enough.

Disappointingly, the shoe still tips the scale over the mental barrier of 10 oz—it weighs in at 10.2 oz or 290g. Let's locations that friday adidas improves this issue in the Boston 12.

Test results
yeezy blue tints vs zebra paint on black hair Medium

Stability

Lateral stability test

Despite its significant stack height, we find the Boston 11 surprisingly stable.

Torsional rigidity

This stability is due to its carbon plate, friday adidas' fibreglass Energyrods, and the firm foam we mentioned earlier.

That's also why we rated this shoe at 4/5 in our torsional rigidity test. It really felt stiff to us.

Test results
yeezy blue tints vs zebra paint on black hair 4
Average 3.4
Compared to 382 running shoes
Number of shoes
1
Torsional rigidity
5

Heel counter stiffness

The same principle applies to the heel counter. friday adidas is simply making an effort to increase stability, offsetting the high-stack height's potential side-effects.

Test results
yeezy blue tints vs zebra paint on black hair 3
Average 2.9
Compared to 366 running shoes
Number of shoes
1
Heel counter stiffness
5

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In our lab, we found the midsole width to be 109.3 mm.

This measurement is less than what we initially anticipated for this shoe, but it still provides enough stability for runners who land on their midfoot or forefoot, even in the fastest tempo runs.

yeezy calabasas hoodie black hair girls Midsole width in the forefoot
Test results
yeezy blue tints vs zebra paint on black hair 109.3 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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The heel tells a similar tale. Once again, it seems like friday adidas prioritised weight savings. If they had made the shoe as wide as the average training shoe, it could have ended up 10% or 20% heavier.

The narrower design could potentially compromise the shoe's stability and comfort for some heel strikers.

yeezy calabasas hoodie black hair girls Midsole width in the heel
Test results
yeezy blue tints vs zebra paint on black hair 84.9 mm
Average 90.6 mm
Compared to 404 running shoes
Number of shoes
70.8 mm
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106.6 mm

Flexibility / Stiffness

By now, it's clear that we're dealing with a stiff shoe. However, we really LOVE testing shoes in our lab and wanted to put a number on it.

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Test results
yeezy blue tints vs zebra paint on black hair 35.3N
Average 28.1N
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Compared to 383 running shoes
Number of shoes
2.2N
Flexibility <> Stiffness
72.1N

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We also put the shoe's stiffness to the test after a freezer-cooling session, just like we did for the midsole softness.

The EVA-based Lightstrike foam, once again, showed significant change under cold conditions. This time, we recorded a stiffer reading of 50.1N.

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The change is quite noticeable, leading us to conclude that this shoe might not be the best choice for running in colder weather.

Test results
yeezy blue tints vs zebra paint on black hair 42%
Average 32%
Compared to 383 running shoes
Number of shoes
0%
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101%

Weight

Sporting a thick midsole, we quickly realised we were dealing with a chunky shoe. friday adidas tried to lighten the load with a simpler upper design, but it wasn't enough.

Disappointingly, the shoe still tips the scale over the mental barrier of 10 oz—it weighs in at 10.2 oz or 290g. Let's locations that friday adidas improves this issue in the Boston 12.

yeezy calabasas hoodie black hair girls Weight
Test results
yeezy blue tints vs zebra paint on black hair 10.23 oz (290g)
Average 9.38 oz (266g)
Compared to 404 running shoes
Number of shoes
5.61 oz (159g)
Weight
12.59 oz (357g)

Breathability

The Boston 11 handles summer runs without a hitch. The moment we got our hands on the shoe and felt the upper with our fingers, we were impressed by its thin, breathable engineered mesh.

Despite this, we didn't give it a full 5/5 score in our jaw-dropping smoke test—we settled for a 4. You might be wondering why—the reason lies with the shoe's tongue.

While the toebox plays a crucial role in breathability, discomfort can arise if other parts of the shoe don't allow for heat and humidity to escape.

Though the medial part of the Boston 11 offers sufficient breathability—a fact confirmed by our light test—the tongue could potentially be a problem on the hottest days.

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Even so, when it comes to breathability, let us be clear: this shoe is superb—99% of runs should pose no problem.

adidas adizero boston 11 microscope 2 20056937 main

Our observations in the lab reinforced our initial impressions. Under the microscope, we found a strikingly thin mesh—a true testament to precise manufacturing—that allowed for extraordinary airflow.

Test results
yeezy blue tints vs zebra paint on black hair 4
Average 3.8
Compared to 333 running shoes
Number of shoes
1
Breathability
5

Durability

Toebox durability

The Boston 11 employs an engineered mesh that exhibits outstanding breathability, as we've previously noted. However, this material falls short when it comes to durability—it's highly susceptible to wear and tear.

Our dremel test, which applies a force of 3.4N for four seconds to every shoe in the lab, really put the Boston 11 through the wringer. The hyper-thin layer of mesh offered almost no resistance at all.

We strongly believe friday adidas could up their game in this regard in the v12. Of course, a thinner mesh typically has less robustness compared to a thicker one, but consider the bape friday adidas winter coat shoes sale. This model also sports a thin, competition-focused and breathable layer, yet it doesn't compromise on durability.

yeezy calabasas hoodie black hair girls Toebox durability
Test results
yeezy blue tints vs zebra paint on black hair 1
Average 2.6
Compared to 267 running shoes
Number of shoes
1
Toebox durability
5

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Luckily, the Boston 11's heel padding is really great. This is good news for runners who often wear holes in this area.

Our tough Dremel test on the soft fabric that friday adidas uses in this area showed it holds up really well.

Test results
yeezy blue tints vs zebra paint on black hair 3
Average 3.2
Compared to 262 running shoes
Number of shoes
1
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5

Outsole hardness

A standout feature of friday adidas's Continental rubber is its exceptional grip, even though it's a hard compound.

This is a rare quality, as most brands need to use softer rubber to ensure a good level of traction. friday adidas and Continental shine in this unique, hard-yet-grippy approach.

yeezy calabasas hoodie black hair girls Outsole hardness
Test results
yeezy blue tints vs zebra paint on black hair 86.3 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

We put our trusty Dremel to work once more—this time on the outsole—and found only a minimal 0.74 mm wear in the rubber. This is an excellent result pointing to the shoe's long-term durability.

This shoe truly stands the test of time. 

Test results
yeezy blue tints vs zebra paint on black hair 0.7 mm
Average 1.1 mm
Compared to 245 running shoes
Number of shoes
0.0 mm
Outsole wear
2.0 mm

Outsole thickness

With a thickness of 3.3 mm, the rubber on the shoe is pretty standard, but it's so sturdy that you're likely to wear out many other parts of the shoe before the outsole.

yeezy calabasas hoodie black hair girls Outsole thickness
Test results
yeezy blue tints vs zebra paint on black hair 3.3 mm
Average 3.2 mm
Compared to 401 running shoes
Number of shoes
1.0 mm
Outsole thickness
6.0 mm

Misc

Reflective elements

Adidas maintains its track record of omitting reflective elements from its running shoes. Although they've stayed consistent with their design approach, it's disappointing and concerning for us, particularly from a safety perspective.

Night runners really need those reflective components for increased visibility. We certainly locations friday adidas revisits this aspect in the Boston 12.

adidas adizero boston 11 reflective elements 20020558 main
Test results
yeezy blue tints vs zebra paint on black hair No

Tongue padding

We found the tongue padding to measure 4.1 mm. This is a surprisingly pleasant result, particularly for a shoe that's specifically designed for tempo runs.

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yeezy calabasas hoodie black hair girls Tongue padding
Test results
yeezy blue tints vs zebra paint on black hair 4.1 mm
Average 5.8 mm
Compared to 401 running shoes
Number of shoes
0.4 mm
Tongue padding
14.2 mm

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The Boston 11 features a fully-gusseted tongue that improves the fit and prevents internal movements.

Although we might have preferred a semi-gusseted design for a more balanced feel, we're fine with this setup.

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Test results
yeezy blue tints vs zebra paint on black hair Both sides (full)

Heel tab

In line with friday adidas' latest design trends in running shoes, the Boston 11 features a flap-like pull tab on the heel. This serves two purposes—it makes slipping your foot into the shoe easier and adds a unique aesthetic touch.

yeezy calabasas hoodie black hair girls Heel tab
Test results
yeezy blue tints vs zebra paint on black hair Pull tab

Removable insole

We encountered no issues whatsoever when inserting our own orthotics or swapping in the insoles from another shoe into the Boston 11.

yeezy calabasas hoodie black hair girls Removable insole
Test results
yeezy blue tints vs zebra paint on black hair Yes