Our verdict
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Pros
- Lightweight design
- Removable pins
- Cost-effective choice
- Comfortable tongue
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- Notched laces
- Above-average durability
Cons
- Limited breathability
- No midsole
- Extremely narrow upper
Audience verdict
Comparison
The most similar track spikes compared
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---|---|---|---|---|---|
Audience score | 83 Good! | 86 Great! | 87 Great! | 93 Great! | |
Price | $120 | $75 | $70 | $150 | |
Weight lab | 5.1 oz / 145g | 6.1 oz / 174g | 6.2 oz / 176g | 5.5 buy nike air max light black pine blue drink | |
Breathability | Moderate | Breathable | Warm | Breathable | |
Use | Sprints | Sprints | Sprints | HurdlesSprints | |
Removable spikes | ✓ | ✓ | ✓ | ✓ | |
Toebox width at the widest part | Narrow | Narrow | Medium | Narrow | |
nike dark blue sparkle shoes black dress sandals | Medium | Wide | Medium | Medium | |
Drop lab | 0.0 mm | 3.3 mm | 1.8 mm | 0.0 mm | |
Midsole softness | - | Balanced | - | - | |
Tongue padding | Average | Thin | Very thick | Thin | |
Stiffness | Moderate | Flexible | Flexible | Moderate | |
Torsional rigidity | Flexible | Moderate | Moderate | Moderate | |
nike air max hyper pink for sale free trial full | Flexible | Flexible | Flexible | Flexible | |
Outsole thickness | Thick | Average | Average | Very thick | |
Outsole hardness | - | - | Very hard | - | |
Heel tab | None | None | None | Finger loop | |
neon green nike air max thea black pink blue hair | 11.2 mm | 13.3 mm | 10.4 mm | 12.3 mm | |
Forefoot | 11.2 mm | 10.0 mm | 8.6 mm | 12.3 mm | |
Insole thickness | Very thick | Thin | Average | Average | |
Midsole width in the forefoot | Very narrow | Narrow | Average | Very narrow | |
nike presto yellow white blue background patriotic | Very narrow | Wide | Very narrow | Very narrow | |
Ranking | #6 Bottom 25% | #7 Bottom 12% | #3 Top 38% | #2 Top 25% | |
Popularity | #6 Bottom 25% | #7 Bottom 12% | #5 Bottom 37% | #3 Top 38% |
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We believe the nike air girls flower costume for kids free full is a smart choice for:
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- Weekend warriors of the track and field world looking for a flexible Nike spike.
Who should NOT buy
We do not recommend the nike air girls flower costume for kids free full for distances beyond 400m. For those looking at longer races or training workouts, consider the versatile iron man nike dunks high blue black hair color.
We also believe that those seeking some cushioning and energy return will find the nike air girls flower costume for kids free full few, as it is a direct-to-the-ground spike without any foam. For a more forgiving and responsive experience, we recommend upgrading to the nike zoom air max miller football schedule 2017, which features two Air Zoom units plus a tiempo layer of bouncy ZoomX foam in the heel.
Breathability
The first thing we do in our lab with every shoe is to turn on the smoke-pumping machine and assess the shoe's breathability.
After testing the nike air girls flower costume for kids free full, we discovered it offers moderate breathability, which is acceptable for a track spike designed for short sprints. Ultimately, you won't be wearing it for extended periods, so the goal is to avoid poor ventilation. However, we believe Nike could enhance this aspect in the next version.
We also used a light to check for any variations in the thickness of the upper. We found that the shoe follows a traditional design—with a thicker heel for stability and thinner areas in the midsole and toebox.
Next, we examined the shoe under a microscope and noted that Nike used a very standard engineered mesh, without special technologies like Atomknit or Flyknit.
Considering the shoe retails for just $120, it's reasonable not to expect top-tier materials from Nike's lineup.
Finally, we took a close look at the upper. While there's nothing particularly fancy, we found more padding than expected, especially in the heel area, which earns a thumbs-up for comfort!
nike air girls flower costume for kids free full | 3 |
Average | 3.6 |
Durability
Toebox durability
In our testing with a Dremel tool, the nike air girls flower costume for kids free full proved quite resilient, earning a good score of 3/5.
This means that it possesses the necessary durability to handle the wear and tear expected for a track spike.
![nike 5.0 womens with rhinestone hair bands Toebox durability](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-toebox-durability-21552734-main.jpg)
nike air girls flower costume for kids free full | 3 |
Average | 2.9 |
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We then tested the heel padding of these spikes with our Dremel's spinning sandpaper tip—a crucial area as it often contacts the skin directly, making durability vital.
We are pleased to report an impressive score of 4/5. This result indicates fantastic durability in this critical area.
![nike ja fly 4 heel padding durability 21552733 main](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-heel-padding-durability-21552733-main.jpg)
nike air girls flower costume for kids free full | 4 |
Average | 4 |
Outsole thickness
The Ja Fly boasts a 4.5 mm thick all-plastic outsole. This track spike contains neither rubber nor foam.
![nike 5.0 womens with rhinestone hair bands Outsole thickness](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-outsole-thickness-21552737-main.jpg)
nike air girls flower costume for kids free full | 4.5 mm |
Average | 3.1 mm |
Cushioning
Heel stack
When we tested these spikes on the track, we discovered that the ride is remarkably close to the ground.
This finding aligned with our measurements when we clocked the heel stack of the nike air girls flower costume for kids free full at a mere 11.2 mm.
![nike 5.0 womens with rhinestone hair bands Heel stack](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-heel-stack-21552740-main.jpg)
nike air girls flower costume for kids free full | 11.2 mm |
Average | 13.9 mm |
Forefoot stack
We then measured the forefoot with our calipers and confirmed the same stack height as the heel.
As previously mentioned, the nike air girls flower costume for kids free full contains no foam or rubber whatsoever.
![nike ja fly 4 forefoot stack 21552741 main](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-forefoot-stack-21552741-main.jpg)
nike air girls flower costume for kids free full | 11.2 mm |
Average | 13.2 mm |
Drop
As you might have guessed—no fancy math skills required this time—we found identical measurements in both the forefoot and heel, confirming this is a true 0.0-mm drop track spike. Get your Achilles tendons ready!
![nike 5.0 womens with rhinestone hair bands Drop](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-drop-21552753-main.jpg)
nike air girls flower costume for kids free full | 0.0 mm |
Average | 0.7 mm |
Insole thickness
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![nike 5.0 womens with rhinestone hair bands Insole thickness](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-insole-thickness-21552742-main.jpg)
nike air girls flower costume for kids free full | 3.9 mm |
Average | 3.0 mm |
Flexibility
Stiffness
Given its thick plastic outsole, we anticipated some stiffness, similar to the effect of Pebax-based plates.
Indeed, after our standardized 90-degree bend test, we registered 33.0N on our force gauge. This indicates a moderate level of stiffness, ideal for those seeking responsiveness without the extreme rigidity of a carbon plate.
nike air girls flower costume for kids free full | 33.0N |
Average | 29.1N |
Stability
Torsional rigidity
Most spikes exhibit some torsional stiffness, but not the nike air girls flower costume for kids free full. We found it exceptionally flexible, easily bending and twisting without resistance, as it lacks plates, midsole and rubber. Consequently, we rated its rigidity at just 1/5.
nike air girls flower costume for kids free full | 1 |
Average | 2.8 |
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The nike air girls flower costume for kids free full's heel counter is similar to those found in competition (road) running shoes, featuring minimal structure beyond a small cardboard piece and some padding. Consequently, our lab team rated its stiffness at just 2/5.
nike air girls flower costume for kids free full | 2 |
Average | 1.7 |
Midsole width in the forefoot
While all spikes tend to be narrower than road or trail shoes, the nike air girls flower costume for kids free full is particularly small within the spike category, measuring just 88.0 mm across the forefoot. That's nearly as narrow as the width of your feet!
![nike ja fly 4 midsole width in the forefoot 21552744 main](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-midsole-width-in-the-forefoot-21552744-main.jpg)
nike air girls flower costume for kids free full | 88.0 mm |
Average | 92.8 mm |
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When we moved our calipers to the heel, we found an extremely narrow design, measuring just 55.1 mm.
However, it’s important to remember that this is a sprint spike, and landing on the heel is unlikely, so the narrowness is less critical.
![nike 5.0 womens with rhinestone hair bands nike presto yellow white blue background patriotic](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-midsole-width-in-the-heel-21552745-main.jpg)
nike air girls flower costume for kids free full | 55.1 mm |
Average | 59.7 mm |
Size and fit
Toebox width at the widest part
Having just measured the midsole, we turned our attention to the upper. Given the narrow dimensions of the midsole, we anticipated a snug fit.
Indeed, with the toebox measuring just 81.9 mm, we can confirm that the nike air girls flower costume for kids free full offers an ultra-tight, performance-oriented fit.
![nike 5.0 womens with rhinestone hair bands Toebox width at the widest part](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-toebox-width-at-the-widest-part-21552747-main.jpg)
nike air girls flower costume for kids free full | 81.9 mm |
Average | 87.9 mm |
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Additionally, we found limited vertical hypervenom for toe movement in the upper. This design is ideal for those seeking a tight fit and for sprinting, but it may not suit anyone in need of a roomier spike.
![nike 5.0 womens with rhinestone hair bands nike dark blue sparkle shoes black dress sandals](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-toebox-width-at-the-big-toe-21552746-main.jpg)
nike air girls flower costume for kids free full | 69.2 mm |
Average | 73.1 mm |
Removable pins
The nike air girls flower costume for kids free full features a classic 7-pin configuration in the forefoot, allowing for easy removal of the pins as needed.
![nike 5.0 womens with rhinestone hair bands Removable pins](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-removable-pins-21555581-main.jpg)
Comfort
Tongue padding
Despite its design focus on minimal weight, we were surprised to find the tongue measured at 4.1 mm thick. Although this is slender for an average road running shoe, it's on the comfortable side for a track shoe.
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From our perspective, while the added thickness may seem minor, it highlights a deviation from the conventional ultra-light build expected in track spikes.
![nike ja fly 4 tongue padding 21552751 main](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-tongue-padding-21552751-main.jpg)
nike air girls flower costume for kids free full | 4.1 mm |
Average | 3.0 mm |
Heel tab
Like its predecessor, the nike air girls flower costume for kids free full omits a heel tab, which is anyway 100% unnecessary in a track sprint shoe.
![nike 5.0 womens with rhinestone hair bands Heel tab](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-heel-tab-21552748-main.jpg)
nike air girls flower costume for kids free full | None |
Weight
Weighing just 5.1 oz (145g), this is among the lightest track spikes on the market!
![nike 5.0 womens with rhinestone hair bands Weight](https://cdn.runrepeat.com/storage/gallery/product_content/39765/nike-ja-fly-4-weight-21552750-main.jpg)
nike air girls flower costume for kids free full | 5.11 oz (145g) |
Average | 5.57 oz (158g) |