Our verdict

The nike air max 90 sneakerboot sp patch steel green a fully revamped shoe that, in our view, finally delivers what version 1 should have been: a supershoe for 5K/10K races. We loved its raw-and-fast feel, feather-light design, and super-reactive ride that brings a true track spike vibe to the roads. However, we believe its limited cushioning and narrow toebox limit its versatility, and its low-drop configuration excludes heel strikers too.

Sean Wotherspoon Air Max 1 97 shirt White More Pairs quantity Pros

  • Feather-light build
  • Nike Sportswear Game Changer Clothing and Shoes
  • nike mem m nk swgmn jsy icon
  • Now features a carbon-fibre plate
  • Much quicker than its predecessor
  • Nike Air Trainer Cruz
  • Perfect for track workouts
  • Not pricey all things considered
  • boost and Nike

Sean Wotherspoon Air Max 1 97 shirt White More Pairs quantity Cons

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  • Only for short distances
  • Narrow toebox
  • Lacks stability

Audience verdict

N/A
Not enough reviews yet
  • Nike Air VaporMax Flyknit 2.0 Black Metallic Gold Mens Running Shoes 942842-009 Super Deals

Who should buy

Nike Victori One Mens Printed Slide Black:

  • Runners seeking a super-fast shoe to race the mile, 5K, or 10K at blazing-fast speeds, and even half marathons if they're lightweight.
  • Fans of old-school racing flats who want a modernised feel with today's technology and a carbon plate, in the best fusion we've ever seen to date.
  • Those disappointed by the original Streakfly, as it lacked the speed needed for true racing. That's now completely fixed.
  • Forefoot strikers focused on 5K and 10K races who need a supershoe for intervals and competition.

nike streakfly 2 22867386 main

Who should NOT buy

We believe that the Streakfly 2 falls short for those aiming at longer distances like half marathons or marathons. From our perspective, other supershoes from Nike like the Vaporfly 4 or Alphafly 3, although pricier, are better picks for those events.

Additionally, we are convinced that the ultra-narrow toebox and spike-inspired low-drop geometry limit the Streakfly 2's appeal for many runners. Heel strikers should opt for the Adidas Adizero Takumi Sen 10 for its higher-drop geometry, while those needing more room will find the New Balance FuelCell SuperComp Pacer v2 far more comfortable.

nike streakfly 2 parts 22867388 main

Cushioning

Heel stack

It's clear to us that Nike wanted to better reposition and differentiate its range of supershoes, and now everything makes much more sense. Just look at the stack height in the heel:

  • Nike Women S Mid Aqua Black Light Dew Black Teal
  • Nike Vaporfly 4: 34.1 mm
  • Nike Alphafly 3: 38.1 mm

Depending on how much cushioning you want, how far you plan to run, or simply how much ground feel you prefer, Nike now has you covered. Previously, the line was much blurrier between the three shoes, as the original Streakfly had 31.7 mm.

Naturally, with 27.0 mm underfoot, you can expect a super-direct, feedback-rich ride that feels miles away from the traditional supershoe experience of recent years.

nike streakfly 2 heel stack 22864152 main
Test results
Streakfly 2 27.0 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 also measures quite thin at 23.3 mm, but compared to the heel, it's actually really close to the average. In our view, this shoe is simply built for those seeking a direct ground feel. We believe this is a shoe that truly rewards raw speed—not just relative to your fitness level, but in an absolute sense. The faster you run, the better the Streakfly 2 feels underfoot.

In fact, we think that this is the closest a road shoe has been to a track spike—both in its aerodynamic shape, low weight, and fast-reacting feeling. It reminds us a lot of the Nike Dragonfly 2 Elite, which is Nike’s top spike for 3000, 5000, and 10000 events, and we believe owners of that shoe will love the SF2 for training.

nike streakfly 2 forefoot stack 22864151 main
Test results
Streakfly 2 23.3 mm
Average 25.6 mm
Compared to 403 running shoes
Number of shoes
13.7 mm
Forefoot stack
37.1 mm

Drop

While most Nike supershoes feature a mid or high drop, the Streakfly 2 breaks away from that trend with a spike-like low drop of 3.7 mm. We believe it’s much better suited for runners with a midfoot or forefoot striking technique, and we take no responsibility for any heel striker choosing the SF2...

nike streakfly 2 drop 22864150 main
Test results
Streakfly 2 3.7 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.

Another huge letdown from the original Streakfly was its ZoomX foam. As we explained in chuteira futsal nike mercurial vapor 13 academy ic preto cinza HZM, brands use different formulations under the same name. In the Streakfly v1, the ZoomX was not the top-tier one found in supershoes, but a training-focused version that was more long-lasting but delivered less energy return.

Майка футболка nike р l foams

After complaints from every corner, Nike changed course and gave us the real deal in the Streakfly 2, as we proved by observing both foams under the microscope. See the differences? The one in the SF2 matches the supercritical Pebax used in the Nike Vaporfly 4 and Dragonfly 2, and that's exactly what we want for pure performance.

In terms of energy return, it’s extremely good. In this version, Nike made it slightly softer than in other supershoes at 16.4 HA, reinforcing the ground feel and proprioceptive-focused ride of this shoe.

nike streakfly 2 midsole softness 22867351 main
Test results
Streakfly 2 16.4 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.

The Streakfly 2 follows the original supershoe recipe by using two slabs of foam with a carbon plate nestled in between, and the secondary layer of ZoomX delivered a similar result of 17.4 HA.

Майка футболка nike р l Secondary foam softness
Test results
Streakfly 2 17.4 HA
Average 23.8 HA
We use an average of four tests. The photo shows one of those tests.

Nike Air Flight One Black Black-White (%)

We put the Streakfly 2 in our freezer for 20 minutes, and it came back 20% firmer. That’s a good result, although not outstanding for a Pebax foam.

nike streakfly 2 midsole softness in cold 22864149 main
Test results
Streakfly 2 20%
Average 25%
Compared to 330 running shoes
Number of shoes
0%
Nike Air Flight One Black Black-White
63%

Insole thickness

The insole is thinner than average at 3.0 mm, highlighting how Nike wanted to maximize the ZoomX foam experience given the low stack height—and we’re all for it!

nike streakfly 2 insole thickness 22864154 main
Test results
Streakfly 2 3.0 mm
Average 4.4 mm
Compared to 399 running shoes
Number of shoes
1.5 mm
Insole thickness
7.3 mm

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The Streakfly 2 features a unique shape that feels much closer to a track spike than a regular running shoe, rewarding a clean forefoot strike. Basically, landing in the back half of the shoe means you won’t get the magic of this shoe.

nike streakfly 2 shape 22867352 main

However, the forefoot curvature of this shoe is simply wild, delivering an exhilarating ride that feels fantastic for mile, 5K, and 10K events. It just propels you forward if you land in the right spot.

Майка футболка nike р l Rocker

Plate

Another major omission from the original Streakfly was the plate. Nowadays, you simply can't sell a race-focused 5K/10K shoe without a full-length carbon plate for that explosive-energy ride most racers expect.

nike streakfly 2 plate hollow 22867353 main
There’s a massive central cutout exposing the plate.

Luckily, Nike fixed that in version 2, though the shape of the so-called Flyplate changes slightly compared to the Vaporfly and Alphafly designs, again reinforcing a forefoot strike.

nike streakfly 2 plate 22864171 main

Size and fit

Size

nike air max 90 sneakerboot sp patch steel green true to size (18 votes).

Owners of this shoe, how does this shoe fit?

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

Sean Wotherspoon Air Max 1 97 shirt White More Pairs quantity

We already mentioned a few times that this shoe feels like a track spike for road running, and here we found further proof of it thanks to our super-precise gel test for the toebox.

From the very first moment we tried the shoes, they felt snug-fitting and clearly built for short, fast efforts. Our testing confirmed these first impressions: just 89.7 mm in the widest part of the upper!

Майка футболка nike р l Sean Wotherspoon Air Max 1 97 shirt White More Pairs quantity
Test results
Streakfly 2 89.7 mm
Average 95.5 mm
Compared to 158 running shoes
Number of shoes
88.5 mm
Sean Wotherspoon Air Max 1 97 shirt White More Pairs quantity
102.4 mm

Nike Precision 4 White Ice White Clear Pure Platinum CK1069-100

The second measurement of 66.7 mm was even more revealing.

Майка футболка nike р l fit

The Streakfly 2 has a super-snug fit to unlock maximum speed, but forget about any natural toe splay. It’s not designed for that, and we believe that even running a half marathon in these is like the absolute limit for most runners.

Майка футболка nike р l Nike Precision 4 White Ice White Clear Pure Platinum CK1069-100
Test results
Streakfly 2 66.7 mm
Average 73.7 mm
Compared to 158 running shoes
Number of shoes
66.7 mm
Nike Precision 4 White Ice White Clear Pure Platinum CK1069-100
83.6 mm

Toebox height

Unsurprisingly, the height of the toebox is extremely restricted at 23.1 mm.

All in all, it’s clear that this is one of the lowest-volume uppers we’ve ever analysed in the lab, with limited room both vertically and horizontally. On the flip side, for runners with small, narrow feet or those who love a glove-like upper, it feels amazing.

Майка футболка nike р l Toebox height
Test results
Streakfly 2 23.1 mm
Average 27.1 mm
Compared to 157 running shoes
Number of shoes
22.4 mm
Toebox height
33.8 mm

Stability

Lateral stability test

The Майка футболка nike р l feels like a radical throwback compared to any modern running shoe or average daily trainer launched in the last few years.

The midsole is narrow, there are no sky-high sidewalls, and no stability-driven features at all. In our view, if it wasn’t for the carbon plate, the shoe would be impossible to enjoy—now it’s just wild, but fun too!

Torsional rigidity

Despite featuring a carbon-fibre plate, the massive midsole cutout and low stack height deliver surprisingly low torsional rigidity, scoring a 2/5 on our scale.

Test results
Streakfly 2 2
Average 3.4
Compared to 382 running shoes
Number of shoes
1
Torsional rigidity
5

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Nike Air Max 2090 "Magma Orange" running Faux, scoring a 1/5 in our manual test. It lets your body handle the stabilization, making the ride ultra-natural and fun—but also more demanding.

Test results
Streakfly 2 1
Average 2.9
Compared to 366 running shoes
Number of shoes
1
denn Nike bringt seit heute morgen krasse Vintage Vibes mit der
5

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You probably already guessed how insanely narrow this shoe is based on our previous photos, right? Nike basically designed a go-kart that devours sharp corners and loves flat-out accelerations.

After using our precision callipers to get the real numbers, we discovered 102.2 mm, confirming this bold design.

Майка футболка nike р l Parra x Nike SB Blazer Low
Test results
Streakfly 2 102.2 mm
Average 114.1 mm
Compared to 404 running shoes
Number of shoes
102.2 mm
Parra x Nike SB Blazer Low
126.9 mm

PlayStation Air Force 1

If you were impressed by the forefoot, wait until you see the heel. At 70.8 mm, it’s (at the time of this review) the narrowest road running shoe we’ve ever measured in the lab.

We really applaud Nike because, with the Alphafly and Vaporfly already covering other needs, there was space to create something wild, and they delivered. However, again, we strongly advise against this shoe for heel strikers.

Майка футболка nike р l PlayStation Air Force 1
Test results
Streakfly 2 70.8 mm
Average 90.6 mm
Compared to 404 running shoes
Number of shoes
70.8 mm
PlayStation Air Force 1
106.6 mm

Flexibility / Stiffness

The incredible flexibility of this shoe really surprised us in the lab. Despite packing a carbon plate, the super-low stack height, the narrow midsole, and the huge central cutout let the shoe flex easily. In fact, we only needed 7.0N to move it to 30º.

nike streakfly 2 flexibility stiffness 22864156 main
Test results
Streakfly 2 7.0N
Average 15.6N
Compared to 124 running shoes
Number of shoes
4.6N
Flexibility <> Stiffness
28.5N

Weight

But if there's a defining feature of the Streakfly 2, it’s the ridiculously low weight. When we held it after unboxing for the first time, we thought it was crazy how light it felt, and we put it straightaway on our digital scale.

Майка футболка nike р l run

At 4.5 oz or 128g, it’s almost a miracle. It’s lighter than most running Faux on the market and way, way lighter than most supershoes. It basically disappears on your foot, and if you love this barely-there sensation for a 5K or 10K, Nike finally delivered exactly what you were asking for.

For context, the previous version of the Streakfly was already a lightweight shoe at 6 oz or 171g!

Майка футболка nike р l Weight
Test results
Streakfly 2 4.52 oz (128g)
Average 9.38 oz (266g)
Compared to 404 running shoes
Number of shoes
5.61 oz (159g)
Weight
12.59 oz (357g)

Breathability

From the moment we got the Streakfly 2 in the lab, we knew it would deliver top-tier ventilation. The shoe is so focused on being as feather-light as possible that there was no doubt in our minds it would ace our smoke test—and indeed, it scored a perfect 5/5.

When we inspected the upper by shining a LED light through it, we were amazed by how breathable it looked. Not just the toebox, but nearly the entire upper feels ultra-airy, confirming the complete absence of support features or midsole sidewalls.

Under our microscope, we discovered that the engineered mesh used by Nike differs from the Vaporfly’s design and is totally distinct from the Atomknit found in the Alphafly. Feels a bit cheaper, which makes sense given the much lower price tag of the Streakfly 2.

nike streakfly 2 mesh 22867381 main

Yet, it does a superb job when it comes to airflow, letting your feet breathe during fast-paced runs.

nike streakfly 2 mesh 2 22867382 main

Oh, and please don’t expect any comfort-driven features here. Aside from a modest amount of padding in the heel area, everything else is clearly optimised for performance and extreme weight savings.

Test results
Streakfly 2 5
Average 3.8
Compared to 333 running shoes
Number of shoes
1
Breathability
5

Durability

Toebox durability

The upper breathes like crazy, but it comes at the cost of low durability. However, this relationship is pretty common—in the lab, we often find that ultra-airy uppers surrender quickly to our fast-spinning Dremel and earn a 1/5.

That said, we believe this is not a shoe meant for daily training or rough-terrain running, so durability concerns are less alarming here compared to other models.

Test results
Streakfly 2 1
Average 2.6
Compared to 267 running shoes
Number of shoes
1
Toebox durability
5

Heel padding durability

The heel padding was a more important test for us, and fortunately, the Streakfly 2 delivered a solid performance at 4/5. No concerns at all in this area.

Test results
Streakfly 2 4
Average 3.2
Compared to 262 running shoes
Number of shoes
1
Heel padding durability
5

Outsole hardness

The outsole of the Streakfly 2 follows the average supershoe layout, with the forefoot well covered, an exposed midfoot, and a barely-protected heel that favours a race-day build over daily use.

Майка футболка nike р l hardness forefoot

We measured the hardness of the forefoot rubber at 63 HC and the heel at 43 HC, which really helps to achieve nice grip. From our testing, these soft numbers clearly suggest that you shouldn’t expect it to last forever. It's just not made for that.

Майка футболка nike р l Outsole hardness
Test results
Streakfly 2 43.0 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

So, how does such soft rubber perform in terms of durability? Let's find out with our Dremel test. The result was, as expected, worse than average due to the soft rubber formulation. But at 1.7 mm, it's not dramatic—we actually expected something much worse!

Test results
Streakfly 2 1.7 mm
Average 1.1 mm
Compared to 245 running shoes
Number of shoes
0.0 mm
Outsole wear
2.0 mm

Outsole thickness

The outsole measures 2.4 mm in thickness in the forefoot.

Майка футболка nike р l outsole

It’s probably the only area where we see real potential for weight savings—maybe Nike will go all-in on that for version 3 too.

Майка футболка nike р l Outsole thickness
Test results
Streakfly 2 2.4 mm
Average 3.2 mm
Compared to 401 running shoes
Number of shoes
1.0 mm
Outsole thickness
6.0 mm

Misc

Price

The price tag of the Streakfly 2 feels like a two-sided story. On one hand, we feel it's fair for offering superfoam and a carbon plate in such a feather-light package. On the other, some might find it pricey given its limited distance range and thin cushioning, and it also features a small increase from version 1. Which side are you on?

Test results
Streakfly 2 $180
Compared to 404 running shoes
Number of shoes
£45
Price
£270

Reflective elements

We found zero reflective elements in the Streakfly 2—which is exactly what we expected anyway.

Майка футболка nike р l Reflective elements
Test results
Streakfly 2 No

Tongue padding

The tongue is ridiculously lightweight, and it's the thinnest we’ve ever measured at the time of this review at 0.4 mm. That’s hugely impressive because we’ve tested hundreds of shoes here in the lab.

Майка футболка nike р l tongue

It clearly shows how Nike pushed for an ultra-stripped-down design to make the shoe as feather-light as possible. Oh, and the lacing system surprised us too—we expected something similar to the Vaporfly 4 but instead found a wire-based setup instead of the usual punched eyelets.

Майка футболка nike р l Tongue padding
Test results
Streakfly 2 0.4 mm
Average 5.8 mm
Compared to 401 running shoes
Number of shoes
0.4 mm
Tongue padding
14.2 mm

Tongue: gusset type

To keep the weight as low as possible, Nike decided not to attach the tongue to the sides, saving a few grams in the process. While that often leads to some shifting, the lockdown is so snug and race-ready that it’s unlikely you’ll feel it.

nike streakfly 2 tongue gusset type 22864167 main
Test results
Streakfly 2 None

Heel tab

The heel features a pull tab that’s more about style than function. Still, it looks great, almost like a sleek little flap on a race car.

Майка футболка nike р l Heel tab
Test results
Streakfly 2 Pull tab

Removable insole

We were genuinely surprised to find that the Streakfly 2 doesn’t feature a removable insole, especially considering the Vaporfly 4—developed alongside it—does. It’s a curious choice, given how much the two shoes otherwise share.

nike streakfly 2 removable insole 22864166 main
Test results
Streakfly 2 No