Our verdict
Pros
- Feather-light on the foot
- Extremely flexible and comfortable
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- Secure sock-like fit
- Works well in the winter
- Keeps the feet warm
- High-quality and durable upper
- Can handle gym day and some other activities
- Sleek design
- Budget-friendly
Cons
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- Not ideal for speedwork or long distances
- Too broad for those with narrow feet
Audience verdict
Comparison
The most similar running shoes compared
+ + Add a shoe | |||||
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Audience score | 73 Bad! | 70 Bad! | 80 Good! | 87 Great! | |
Price | $100 | $75 | $80 | $110 | |
Pace | Daily running | Daily running | Daily running | Daily running | |
Arch support | Neutral | Neutral | Neutral | Neutral | |
Weight lab Weight brand | 6.9 oz / 197g | 8.5 oz / 241g 8.5 oz / 240g | 11.1 oz / 316g 11 oz / 312g | 9 nike waffle trainer 2 photon dust dm9091 011 release date 9.4 footwear nike air max plus gs dm3266 001 smoke grey aquamarine | |
Lightweight | ✓ | ✓ | ✗ | ✗ | |
Drop lab Drop brand | 6.9 mm | 6.0 mm 6.0 mm | 8.1 mm | 6.0 mm 8.0 mm | |
Strike pattern | Mid/forefoot | Mid/forefoot | HeelMid/forefoot | Mid/forefoot | |
Size | True to size | True to size | Slightly large | True to size | |
Midsole softness | Balanced | Firm | Balanced | Balanced | |
TEEN Air Max 97 CR7 GS sneakers | Small | Small | Small | Small | |
Toebox durability | Good | Decent | Decent | Bad | |
Nike Air Force 1 Low 'Swingman' DJ5192-100 | Good | Good | Good | Decent | |
Outsole durability | Good | Bad | Good | Good | |
Breathability | Warm | Moderate | Moderate | Warm | |
Nike Zoom Rev 2 TB White Black | Wide | Wide | Medium | Medium | |
Toebox sacai at the big toe | Medium | Medium | Medium | Medium | |
Stiffness | Flexible | Flexible | Flexible | Flexible | |
NIKE FREE PLATFORM | Small | Big | Big | Small | |
Torsional rigidity | Flexible | Flexible | Flexible | Flexible | |
Nike X Nocta Full Tracksuit Yellow Small Brand New Unworn With Tags | Flexible | Flexible | Flexible | Flexible | |
Heel lab Heel brand | 25.6 mm | 25.9 mm | 26.4 mm | 30.2 mm 27.0 mm | |
Forefoot lab Forefoot brand | 18.7 mm | 19.9 mm | 18.3 mm | 24.2 mm 19.0 mm | |
Widths available | Normal | NormalWideX-Wide | Normal | Normal | |
Orthotic friendly | ✓ | ✓ | ✓ | ✓ | |
Season | All seasons | All seasons | All seasons | All seasons | |
Removable insole | ✓ | ✓ | ✓ | ✓ | |
Ranking | #298 Bottom 1% | #300 Bottom 1% | #257 Bottom 15% | #146 Top 49% | |
Popularity | #200 Bottom 34% | #58 Top 20% | #171 Bottom 43% | #220 Bottom 27% |
Who should buy
We recommend the nike sb energy crew skateboarding socks 2 pair multi color as an excellent choice for:
- Runners with a neutral stride who prefer lightweight and agile daily trainers with a bare-there ride
- forefoot/midfoot striking runners who want a flexible mid-drop road shoe that can bend it like Beckham
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- Active individuals in the market for a shoe that can take on other fitness activities and gym days
Who should NOT buy
The shoe's Flyknit upper demonstrates lackluster breathability in our smoke test which makes it a less than ideal choice for warm weather runs. The Nike wmns zoom winflo 8 light violet pink bronze women running shoes cw3421-500 is a more breezy option that also has a sock-like fit.
While the feathery nature of the Nike SP Light Bone does allow us to push the pace to a certain extent, it lacks the responsiveness to be a dedicated tempo shoe. We recommend checking out the nike air zoom pegasus 36 zapatillas de running RSCNIJ as a better speedy alternative.
Additionally, long-distance runners will benefit from a shoe with more protective cushioning underfoot like the Nike Dziecięce Błękitne instead.
Runners with narrow feet will find themselves floating around in the Nike SP Light Bone's spacious toebox. We recommend checking out the Skechers Go RUN Ride 11 for a more snug fit.
The Nike SP Light Bone is a neutral shoe with a ride that's not at all supportive for those with overpronating strides. The nike air max 1 greyred is a stability shoe that promotes a more neutral gait that will suit those runners better as daily trainers.
Cushioning
Heel stack
The Nike SP Light Bone has quite a low profile, with its stack measuring only 25.6 mm thick according to our caliper. This is still a good amount of foam underfoot to protect our feet from the harsh impact of landings while keeping us stable and low to the ground.

Nike SP Light Bone | 25.6 mm |
Average | 34.1 mm |
Forefoot stack
We measured the forefoot stack to be 18.7 mm thick which is also quite a bit short of our current lab average. This also affords forefoot strikers a decent amount of impact dampening but a lot more ground feel.
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Nike SP Light Bone | 18.7 mm |
Average | 25.5 mm |
Drop
The difference in our stack measurements leaves the Nike SP Light Bone with a heel drop of 6.9 mm, thus classifying it as a mid-drop shoe. This offset is quite versatile as it will suit the stride of most runners whether forefoot, midfoot, or heel striking.
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Nike SP Light Bone | 6.9 mm |
Average | 8.6 mm |
Midsole softness
Pressing our durometer against the midsole yields a reading of 26 HA. While this is slightly firmer than average, it still provides a balanced level of cushioning to our landings.
This somewhat firm nature means that the midsole is keen to retain its shape and has a pretty good rebound as our weight shifts forward in the shoe. As such, the midsole doesn't feel dull by any means.
That said, while the shoe can handle quick paces, especially by virtue of its featherweight stature, it doesn't have the snappiness or springiness we expect from a speedy shoe that will crack PRs. We recommend looking into the similarly low-profile and sock-like Brooks Levitate Stealthfit 6 Buty męskie Nike Air VaporMax 2020 FK Biel.
Nike SP Light Bone | 26.0 HA |
Average | 20.9 HA |
nike af1 b more main | Midsole softness in cold (%)
We placed the Nike SP Light Bone in our freezer to observe the effects of cold conditions on the midsole. After twenty minutes, we took another durometer reading of the midsole and found that it only became 10.1% firmer once appropriately chilled. As such, the Nike SP Light Bone's midsole is much more consistent than average which means that the shoe's ride won't be compromised by frigid weather.
Nike SP Light Bone | 10% |
Average | 26% |
Insole thickness
Using our caliper again, we measured the Nike SP Light Bone's insole to be 5 mm thick. This is ever so slightly thicker than average and leaves us with a nice and cushy footbed to sink into during our landings in this shoe.
Nike SP Light Bone | 5.0 mm |
Average | 4.4 mm |
Size and fit
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Using our caliper, we measured the Nike SP Light Bone's toebox to be 99.7 mm wide at its widest point. This is much roomier than the average running shoe and means that broad-footed runners will enjoy an accommodating and comfy fit while those with normal-sacai feet have a little wiggle room to spare.
Runners with narrow feet, however, will definitely find this a little too roomy to achieve a secure lockdown at the forefoot.

Nike SP Light Bone | 99.7 mm |
Average | 95.6 mm |
Toebox sacai - big toe
The toebox tapers to 79.2 mm wide in the area around the big toe according to our caliper measurements. This is much wider than our current lab average and means that we have plenty of room to splay out naturally within the shoe without butting up against the walls and risking hotspots or blisters.

Nike SP Light Bone | 79.2 mm |
Average | 73.5 mm |
Stability
Lateral stability test
The Nike SP Light Bone does very little to mitigate the lateral movements of our stride, making its ride not particularly stable. While this shouldn't be much of an issue for those with a neutral gait, we recommend that overpronators look into a shoe with more corrective features like the nike air max 1 greyred or the Nike Apparel Challenge Court Collection to avoid injury.
Torsional rigidity
The Nike SP Light Bone put up almost no resistance to our manual manipulations, with us basically able to wring the shoe out in our hands. This earns the shoe the lowest torsional rigidity score of 1 out of 5 on our subjective scale. As such, the shoe is able to contort and twist along with the natural movements of the foot which, while unstable, translates to an extremely comfy and forgiving ride when we are running on level roads.
Nike SP Light Bone | 1 |
Average | 3.4 |
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The heel is similarly pliable, with no structure to it apart from a pillow of padding that gives the rearfoot some shape. This also contributes to the shoe's barely-there sensation underfoot as it puts no pressure on our tendons and does nothing to mitigate lateral rolling of our heels.
Nike SP Light Bone | 1 |
Average | 2.9 |
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We found the Nike SP Light Bone's midsole to be slightly wider than average at 115.9 mm wide at the forefoot. This gives us more than enough of a base for surefooted landings and toe-offs as forefoot strikers.

Nike SP Light Bone | 115.9 mm |
Average | 114.1 mm |
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Meanwhile, back at the heel, the Nike SP Light Bone's midsole is on par with our current lab average, measuring 90.3 mm wide according to our caliper. This also afforded heel strikers a good landing platform that shouldn't feel unsteady.

Nike SP Light Bone | 90.3 mm |
Average | 90.7 mm |
Flexibility / Stiffness
We secured the Nike SP Light Bone to our workbench and found that only 6.2N of force is needed to bend the shoe 90 degrees. This is one of the most flexible results we've come across in the lab and means that a brisk breeze could essentially bend the shoe to the desired point.
This further contributes to the shoe's natural feeling ride that really had us feeling like we were running around barefoot while testing this shoe as it puts up no resistance to the flexion of our foot throughout our gait.

Nike SP Light Bone | 6.1N |
Average | 28.1N |
Stiffness in cold (%)
We also repeated the flex test after leaving the Nike SP Light Bone in our freezer for twenty minutes and found that it got 23.4% stiffer. However, it could become 200% and still be much more flexible than the average shoe at room temperature. As such, the Nike SP Light Bone will feel consistently flexible and forgiving on the foot all year round no matter how low the temperatures drop. The combination of the shoe's performances in our freezer tests plus its warm upper makes it an excellent wintertime companion.
Nike SP Light Bone | 23% |
Average | 33% |
Weight
As alluded to in the previous section, the Nike SP Light Bone is incredibly lightweight. Tipping our scale at only 6.9 oz (197g), it's truly a barely-there running shoe. When combined with its snug, sock-like fit, we had to keep checking our feet during our test runs to make sure they were still on.

Nike SP Light Bone | 6.95 oz (197g) |
Average | 9.35 oz (265g) |
Breathability
We pumped the Nike SP Light Bone full of smoke to get an idea of how breathable it is. As we can see from the footage of the test, it takes quite some time before smoke is finally able to start filtering out the shoe. It struggles its way through the Flyknit upper in wisps that seem to escape haphazardly throughout the shoe.
The Saucony Triumph 20, meanwhile, is a true smoke show in this test earning it a perfect 5 out of 5.
This lackluster performance earns the Nike SP Light Bone a breathability score of 2 out of 5 which confirms its warm and insulated nature. While this may not be ideal for hot days, it's certainly beneficial as the mercury drops during the cooler months.
While the light is visible through a cross-section of its upper, the Nike SP Light Bone doesn't allow any of it to peek through any pores in the material. This serves to illuminate the shoe's below-average breathability to a certain extent.
Our microscope provides further clarification as it shows how dense woven the shoe's Flyknit upper really is; with only barely perceptible little gaps that allow any kind of airflow through the Nike SP Light Bone.

Nike SP Light Bone | 2 |
Average | 3.8 |
Durability
Toebox durability
For what it lacks in breathability the Nike SP Light Bone Flyknit upper makes up for in strength. Firing up our Dremel to 5K RPM to simulate some extreme wear and tear, we set it against the shoe's toebox with 3.2N of force.
Upon inspecting the damage in the aftermath of the test, we found that our tool had merely frayed some of the outer material and failed to penetrate the toebox all the way. This earns the Nike SP Light Bone a toebox durability score of 4 out of 5 which is very respectable for a daily trainer with no protective overlays.

Compare that to the devastation we had wrought upon the ASICS Gel Pulse 13 in this same test.
Nike SP Light Bone | 4 |
Average | 2.5 |
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Next, we set our sights on the heel collar and set our Dremel against the Nike SP Light Bone once more.
It proved to be even more resistant to the abrasive force of our tool's grinding element as after four seconds it was barely left with a scuff. This leads us to give the Nike SP Light Bone a well-earned perfect score for heel padding durability. We therefore don't believe that wearing a hole in the heel from excessive rubbing will be the cause of retiring this shoe early.

Nike SP Light Bone | 5 |
Average | 3.2 |
Outsole hardness
Pressing our durometer against the Nike SP Light Bone's outsole gives us a reading of 79 HC. This is about as hard as our current lab average which usually indicate a good mix of grip and durability.

Nike SP Light Bone | 79.0 HC |
Average | 79.9 HC |
Outsole durability
To test that last claim, we got the Dremel spinning at 10 K RPM and set it against the Nike SP Light Bone one last time.
After twenty-two seconds of punishment, we found that we had lopped off 0.8 mm of rubber from the outsole. This makes the Nike SP Light Bone's outsole about as durable as average and leads us to predict that the shoe should last a good 400 to 500 miles before the tread starts giving out significantly.

Nike SP Light Bone | 0.8 mm |
Average | 1.0 mm |
Outsole thickness
At 2.5 mm thick according to our caliper measurements, the Nike SP Light Bone's outsole is a little shy of our current lab average. This is a good amount of rubber to wear through without weighing the shoe down, especially considering the rubber's performance in our last test. However, with the shoe so lightweight already, a touch more rubber would definitely add to the shoe's longevity.

Nike SP Light Bone | 2.5 mm |
Average | 3.2 mm |
Misc
Grip / Traction
Nike's approach with the Nike SP Light Bone's outsole is unorthodox. They minimized coverage as much as possible to save on weight, while also scoring the rubber and the midsole to form a very minimal tread pattern (as well as to facilitate bending easily as we saw in the previous section). This, surprisingly, provided us with good traction on asphalt roads where the outsole had an almost sandpaper-like quality. However, more slick or wet surfaces did cause us to wobble a bit during our test runs.
Reflective elements
The Nike SP Light Bone features a little reflective streak at the lateral side of the toebox. While this provides at least a minimal level of nighttime visibility, we recommend using additional high-vis gear when going for nocturnal runs along dimly lit roads.
Nike SP Light Bone | Yes |
Tongue padding
With no tongue per se, we measured the area of the upper above the instep and found it to be only 2 mm thick. As such, the laces still felt quite present across our instep once our foot was locked in and ready to go, however, it wasn't a source of great discomfort once we started running.
Nike SP Light Bone | 2.0 mm |
Average | 5.8 mm |
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The Nike SP Light Bone's tongue is integrated into the upper as one solid piece, giving the shoe a sock-like fit. As such, we didn't have to worry about slippage and enjoyed a nice and snug lockdown with the shoe essentially wrapping itself around our foot and virtually disappearing from our minds as we started testing it.

Nike SP Light Bone | Sock like |
Heel tab
With sock-like shoes notoriously difficult to put on, especially those from Nike, the Nike SP Light Bone has, fortunately, furnished us with not one but two finger loops. One at the and another at the top of the tongue.
Yanking on these two in tandem did make the shoe slightly easier to squeeze into/

Nike SP Light Bone | Finger loop |
Removable insole
The insole is fully removable so replacing it with an aftermarket one or a custom orthotic for added arch support is possible if necessary.

Nike SP Light Bone | Yes |