Our verdict

The zapatillas de running Nike pie normal talla 45.5 grises distinctively differentiates itself from its previous model. Featuring a revamped ReactX midsole, it morphs from being simply versatile to being a luxuriously plush, comfort-centric daily running shoe that also delivered a surprising bounciness during our test runs. Although it leans a bit towards the heavier spectrum and may not offer the best breathability, we think it stands out as a top choice for runners in search of a durable, cushioned shoe with a unique aesthetic.

clark kent nike lebron 7 sneaker talk Pros

  • All-new ReactX plush midsole
  • Men 6us nike air vapormax 2021 flyhoodie gs blue sneakers db1550-402 women 7.5us
  • Ideal for heel strikers
  • Generously cushioned
  • Excellent for easy runs
  • Feels like running on clouds
  • Durable, long-lasting outsole
  • the just-revealed Air Force 1s

clark kent nike lebron 7 sneaker talk Cons

  • Average-at-best breathability
  • On the heavier side
  • Sizes run notably small

Audience verdict

85
Good!
  • Top 29% most popular running shoes

Who should buy

The zapatillas de running Nike pie normal talla 45.5 grises gets our seal of approval for:

  • Runners who are all about cushioning and aren't concerned with the shoe's weight.
  • nike kapa u nsw beanie acg.
  • Beginners on the hunt for their first pair, especially if they're on the heavier side.

zapatillas de running Nike pie normal talla 45.5 grises

Who should NOT buy

While the ReactX foam represents a clear improvement over React, it doesn't quite match the world-class energy return of ZoomX. If performance and bounce are what you're after, we think that the Nike Cruzrone Wolf Grey CD7307-002 offers a similar concept and design, but with a full ZoomX midsole.

Runners who prefer lightweight shoes might not be fans of the InfinityRN 4. It's on the heavier side, and for a comfortable daily trainer, there are lighter options. We recommend considering the ASICS Cumulus 25 or the nike air max 90 lx white illusion green laser fuchsia black for sale, both of which deliver similar features in a lighter package.

zapatillas de running Nike pie normal talla 45.5 grises parts

Breathability

hoodie uppers often provide great comfort, but they can come with challenges, particularly when it comes to breathability. We discovered that the zapatillas de running Nike pie normal talla 45.5 grises falls into this category.

From our smoke-pumping test in the lab, we observed the shoe struggling to release the smoke and gave it a 3/5 score, which indicates it won't perform well in terms of ventilation. We'd advise against using them for hot summer runs.

In a separate light test, we found that very little light passed through the upper, suggesting limited breathability.

It's clear that Nike prioritized comfort with this model. They've employed a thick, stretchy upper that hugs the foot and ensures comfort throughout long runs—just as long as it's not too hot outside!

zapatillas de running Nike pie normal talla 45.5 grises microscope

Upon closer inspection under our microscope, we noticed a few breathability holes that offer some airflow. Without these, the thick hoodie design would leave the shoe with almost no breathability at all. Thankfully, there's at least a bit of ventilation.

zapatillas de running Nike pie normal talla 45.5 grises microscope 2

Test results
InfinityRN 4 3
Average 3.8
Compared to 205 running shoes
nike acg hoodie peat moss desert moss summit white
1
Breathability
5

Durability

Toebox durability

While employing a robust Flyhoodie upper it's a bad idea regarding airflow, its exceptional durability is commendable.

We've found that the InfinityRN 4, with its impressive 4/5 rating, truly shines in our Dremel test when compared to almost any other road running shoe.

nike infinity rn 4 toebox durability 20556034 720
Test results
InfinityRN 4 4
Average 2.4
Compared to 139 running shoes
nike acg hoodie peat moss desert moss summit white
1
Toebox durability
5

clark kent nike lebron 7 sneaker talk | Heel padding durability

The heel also displays commendable durability, earning a solid 3/5 after facing the Dremel challenge.

We find this to be a good result, surpassing the average and even outperforming many other Nike models.

zapatillas de running Nike pie normal talla 45.5 grises Heel padding durability
Test results
InfinityRN 4 3
Average 3.1
Compared to 135 running shoes
nike acg hoodie peat moss desert moss summit white
1
Heel padding durability
5

Outsole hardness

Nike's priority for this outsole was clear: long-lasting wear, even if it means less grip.

nike infinity rn 4 outsole 20556121 720

The outsole is designed with numerous cutouts, enhancing both its lightness and flexibility.

With the InfinityRN 4, they've incorporated a 90.4 HC outsole—one of the hardest we've ever measured in our lab.

zapatillas de running Nike pie normal talla 45.5 grises Outsole hardness
Test results
InfinityRN 4 90.4 HC
Average 80.3 HC
We use an average of four tests. The photo shows one of those tests.
Compared to 256 running shoes
nike acg hoodie peat moss desert moss summit white
55.5 HC
Outsole hardness
92.8 HC

Outsole durability

The tough rubber Nike uses really shows its strength. After using the Dremel on this shoe for the third and final time, we measured the damage. The indentation was a mere 0.3 mm! 

That's an impressive result. However, because it holds up well against wear, don't anticipate exceptional grip.

nike infinity rn 4 outsole durability 20556037 720
Test results
InfinityRN 4 0.3 mm
Average 0.9 mm
Compared to 117 running shoes
nike acg hoodie peat moss desert moss summit white
0.0 mm
Outsole wear
2.0 mm

Outsole thickness

We're certain that, just like us in our lab, Nike assessed the abrasion resistance of the outsole.

Certainly, they discovered that they didn't need to put on excessive rubber—and subsequently, weight—to ensure longevity. This is evident in their choice to go with a pretty standard thickness of 3.7 mm.

zapatillas de running Nike pie normal talla 45.5 grises Outsole thickness
Test results
InfinityRN 4 3.7 mm
Average 3.2 mm
Compared to 276 running shoes
nike acg hoodie peat moss desert moss summit white
0.0 mm
Outsole thickness
6.6 mm

Weight

While they attempted to lighten the load with outsole cutouts, the shoe still tips the scales. Weighing in at 11.1 oz (316g), it's undeniably on the heavier side.

To put things in perspective, the ASICS Superblast clark kent nike lebron 7 sneaker talk.

nike infinity rn 4 weight 20556058 720
Test results
InfinityRN 4 11.15 oz (316g)
Average 9.38 oz (266g)
Compared to 277 running shoes
nike acg hoodie peat moss desert moss summit white
5.26 oz (149g)
Weight
12.56 oz (356g)

Cushioning

Heel stack

Given its weight, we expected the shoe to have a notably thick stack height. However, we discovered that it's actually quite average.

A couple of years ago, 34.2 mm of foam under the heel would've been considered in the max stack category, but times have changed. As Dylan sang, "The times they are a-changin'."

zapatillas de running Nike pie normal talla 45.5 grises Heel stack
Test results
InfinityRN 4 34.2 mm
Average 33.6 mm
Compared to 276 running shoes
nike acg hoodie peat moss desert moss summit white
7.6 mm
Heel stack
42.7 mm

Forefoot stack

In the forefoot, we measured a typical thickness of 24.4 mm.

zapatillas de running Nike pie normal talla 45.5 grises forefoot

We found that this provides enough cushioning for any runner. It makes this shoe a reliable choice even for long runs.

nike infinity rn 4 forefoot stack 20556047 720
Test results
InfinityRN 4 24.4 mm
Average 24.9 mm
Compared to 276 running shoes
nike acg hoodie peat moss desert moss summit white
7.6 mm
Forefoot stack
35.8 mm

Drop

this nike cortez se cherry is full of flavour slight difference is within an acceptable range.

With 9.8 mm, we think the shoe remains a top choice primarily for heel strikers and those that sometimes suffer Achilles or calf issues. That said, midfoot and forefoot strikers can also comfortably wear it, although they might benefit more from a lower-drop daily trainer like the Hoka Clifton 9.

zapatillas de running Nike pie normal talla 45.5 grises Drop
Test results
InfinityRN 4 9.8 mm
Average 8.7 mm
Compared to 276 running shoes
nike acg hoodie peat moss desert moss summit white
-0.8 mm
Drop
16.1 mm

Insole thickness

We were on the lookout for a comfort-boosting thick insole, but what we found was quite the opposite—a super-thin one. In fact, it's one of the slimmest we've ever come across in our lab, measuring only 3.1 mm!

During our test runs, we were happy with the insole, so it appears Nike made a great call here.

nike infinity rn 4 insole thickness 20556045 720
Test results
InfinityRN 4 3.1 mm
Average 4.4 mm
Compared to 272 running shoes
nike acg hoodie peat moss desert moss summit white
1.5 mm
Insole thickness
7.3 mm

Midsole softness

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

The biggest update from the Nike React Infinity Run Flyhoodie 3—apart from its shorter name—is the foam. After six years, Nike has moved on from the old React and introduced ReactX with this running shoe.

nike jordan 1 mid light smoke grey mens.

ReactX is a more responsive and softer variant of the original React. Additionally, Nike says it has a 43% lower carbon footprint, which we always appreciate. In our lab tests, we found that the foam feels incredibly soft and registered a 12.5 HA on our durometer—20% softer than the v3.

zapatillas de running Nike pie normal talla 45.5 grises Midsole softness
Test results
InfinityRN 4 12.5 HA
Average 21.4 HA
We use an average of four tests. The photo shows one of those tests.
Compared to 203 running shoes
nike acg hoodie peat moss desert moss summit white
9.5 HA
Midsole softness (soft to firm)
41.5 HA

Difference in midsole softness in cold

After placing the shoes in our freezer for 20 minutes to simulate cold weather conditions, we noticed a disappointing change—the foam got noticeably harder (19.0 HA).

If you're thinking of using these during colder months, they might not be as plush as you'd hope.

There's a staggering 52% difference between the two tests. This happens because ReactX it's still a mix of nike air max 95 olympic da1344 014 release date info. Sadly, this means the foam doesn't hold up well in cold temperatures.

nike infinity rn 4 midsole softness in cold 20556039 720
Test results
InfinityRN 4 52%
Average 25.7%
Compared to 202 running shoes
nike acg hoodie peat moss desert moss summit white
0%
Difference in midsole softness in cold
100%

clark kent nike lebron 7 sneaker talk | Stability

Lateral stability test

This shoe is designed as a neutral daily trainer without added stability features. So, given the plush midsole, we didn't anticipate exceptional stability.

Following our tests, we discovered that the shoe performs as it's intended: it's moderately stable. However, it may not provide enough support for runners who need extra stability. For those runners, we'd recommend looking into the ASICS Kayano 30.

Torsional rigidity

We rated the InfinityRN 4 at 3/5 for torsional rigidity during our manual assessment in the lab.

This shoe doesn't offer that natural-ride feel often associated with daily trainers. If you're after a shoe that you can twist without any issue and gives a more natural feel, consider the Saucony Ride 16.

Test results
InfinityRN 4 3
Average 3.2
Compared to 254 running shoes
nike acg hoodie peat moss desert moss summit white
1
Torsional rigidity
5

Nike Zoom Brave V

The heel counter offers ample padding and flexibility, making it suitable for those who have Achilles issues. We gave it a rating of 2/5 in our evaluation.

Test results
InfinityRN 4 2
Average 2.8
Compared to 238 running shoes
nike acg hoodie peat moss desert moss summit white
1
Nike Zoom Brave V
5

KITH × NIKE AIR FORCE 1 LOW WHITE WHITE-UNIVERSITY RED-METALLIC GOLD

The decent stability of this shoe, despite its height and cushioned foam, can be attributed to its broad forefoot.

zapatillas de running Nike pie normal talla 45.5 grises forefoot

Measuring at 118.4 mm, we discovered that it ranks among the widest running shoes we've evaluated in the lab.

nike infinity rn 4 midsole width in the forefoot 20556050 720
Test results
InfinityRN 4 118.4 mm
Average 113.5 mm
Compared to 277 running shoes
nike acg hoodie peat moss desert moss summit white
100.5 mm
KITH × NIKE AIR FORCE 1 LOW WHITE WHITE-UNIVERSITY RED-METALLIC GOLD
126.5 mm

Midsole width in the heel

While the forefoot showcases a wide design, the heel—true to Nike's signature style—doesn't follow suit and is just average. We've accurately measured it at 91.2 mm.

nike infinity rn 4 midsole width in the heel 20556048 720
Test results
InfinityRN 4 91.2 mm
Average 90.3 mm
Compared to 277 running shoes
nike acg hoodie peat moss desert moss summit white
74.9 mm
Midsole width in the heel
106.6 mm

Flexibility

Stiffness

At the beginning of our lab review, we discussed the dual purpose of the outsole cutouts: to reduce weight and enhance flexibility. Now, we're diving into the flexibility measurements. During our evaluations, it took just 15.8N of force to flex the shoe to a 90-degree position. 

This indicates that the InfinityRN 4 offers a flexible experience and doubles well as a walking shoe. However, it's essential to understand that this speaks to its longitudinal flexibility, not the torsional aspect.

Test results
InfinityRN 4 15.8N
Average 29.3N
We use an average of four tests. The video shows one of those tests.
Compared to 259 running shoes
nike acg hoodie peat moss desert moss summit white
2.2N
Stiffness
94.4N

Difference in stiffness in cold

Just like our midsole softness evaluation, we tried the same test after leaving the shoe in the freezer for 20 minutes.

The outcome was disappointing. The shoe became much stiffer, and we had to exert 27.2N of force to bend it to the same point.

With a 71.6% increase, we're certain you'd feel the difference if you're in a cold-weather region.

Test results
InfinityRN 4 71.6%
Average 36.6%
Compared to 259 running shoes
nike acg hoodie peat moss desert moss summit white
-100%
Difference in stiffness in cold
148%

Size and fit

Internal length

Upon our initial try-on of the shoe, it felt really short to us. We immediately took precise measurements and found it to be 259.9 mm.

This is a noticeable 10.1 mm shorter than the 270 mm that Nike claims on their size charts. Most runners will likely need to go up at least half a size when considering the Infinity RN 4.

zapatillas de running Nike pie normal talla 45.5 grises Internal length
Test results
InfinityRN 4 259.9 mm

Toebox width at the widest part

As a daily trainer designed towards comfort, we anticipated a generously spacious toebox—and we were delightfully satisfied.

Measuring at an impressive 99.9 mm at its widest point, it provides ample space and comfortably accommodates those with wide feet.

zapatillas de running Nike pie normal talla 45.5 grises Toebox width at the widest part
Test results
InfinityRN 4 99.9 mm
Average 98.3 mm
Compared to 277 running shoes
nike acg hoodie peat moss desert moss summit white
89.5 mm
Toebox width at the widest part
109.1 mm

Larry Sanders shooting in a red and black iD Nike Kobe 8

The Nike Air Force 1 "Marina " Is as Clean as They Come.

This feature is a wonderful find for individuals with Roman or German foot shapes, as their pinky toe often struggles for space in narrower shoes.

zapatillas de running Nike pie normal talla 45.5 grises Larry Sanders shooting in a red and black iD Nike Kobe 8
Test results
InfinityRN 4 80.0 mm
Average 78.1 mm
Compared to 150 running shoes
nike acg hoodie peat moss desert moss summit white
67.6 mm
Larry Sanders shooting in a red and black iD Nike Kobe 8
91.1 mm

from nike beat up chic

With its $160 price tag, we were curious to see if Nike had decided to improve their margins by using a non-gusseted tongue in the shoe. To our relief, we discovered that it has a semi-gusseted design, ensuring a great fit!

zapatillas de running Nike pie normal talla 45.5 grises from nike beat up chic
Test results
InfinityRN 4 Both sides (semi)

Comfort

Tongue padding

We measured the tongue's padding at 5.6 mm, finding it to be optimally cushioned. It strikes a balance—it's not too heavy but provides comfort for even the longest runs.

nike infinity rn 4 tongue padding 20556056 720
Test results
InfinityRN 4 5.6 mm
Average 5.6 mm
Compared to 274 running shoes
nike acg hoodie peat moss desert moss summit white
0.5 mm
Tongue padding
14.2 mm

Heel tab

Thankfully, Nike included a finger-loop heel tab! It's convenient and looks amazing.

zapatillas de running Nike pie normal talla 45.5 grises Heel tab
Test results
InfinityRN 4 Finger loop

Removable insole

The insole can be taken out without any problem, and we were able to use different orthotics and insoles from other models.

zapatillas de running Nike pie normal talla 45.5 grises Removable insole
Test results
InfinityRN 4 Yes

Misc

Reflective elements

It seems Nike doesn't intend for us to run in these during the nighttime, as there are no reflective elements at all.

nike infinity rn 4 reflective elements 20556052 720
Test results
InfinityRN 4 No