900+ 39-40s reviewed and cut in half

12 currently testing

27 bought and to be tested

We review 39-40s

Reviews

Running Running
Hiking Hiking
Track and XC Track and XC
Walking Walking
Training Training
Tennis Tennis
nike le bron witness 8 main 22697959 250 Basketball
Sneakers Sneakers

Guides

We go down the rabbit hole when it comes to running 39-40 technologies, features, and lab tests. See all our in-depth guides.

White Adidas Terrex
White Adidas Terrex
nike ultrafly 028 20936785 250
Adidas Concord Snakeskin
The role of heel counters in running 39-40s
The role of heel counters in running 39-40s
A runner's guide to choosing the right toebox
A runner's guide to choosing the right toebox
adidas originals superstar 80s black camogold running white
adidas originals superstar 80s black camogold running white
adidas Pro Vision Grey Collegiate Burgundy
adidas Pro Vision Grey Collegiate Burgundy
How brands' heel-to-toe drop measurements differ from reality in running 39-40s
Understanding differences between men's and women's running 39-40s
Understanding differences between men's and women's running 39-40s
In-depth insights into running 39-40 outsoles (road & trail)
In-depth insights into running 39-40 outsoles (road & trail)
How much does the weight vary across different running 39-40 sizes?
How much does the weight vary across different running 39-40 sizes?

La adidas FutureCraft 4D de retour en 2018 | Latest reviews

Altra Torin 8
Altra Torin 8
Nike Streakfly 2
Nike Streakfly 2
Adidas Mens EQT Trainers Support ADV Parley Trainers Footwear Sneakers
Adidas Mens EQT Trainers Support ADV Parley Trainers Footwear Sneakers
Inov8 Trailtalon
Inov8 Trailtalon
La adidas FutureCraft 4D de retour en 2018
La adidas FutureCraft 4D de retour en 2018
adidas Ultra Boost 3.0 Bronze
adidas Ultra Boost 3.0 Bronze
yeezy blue pvc pumps
yeezy blue pvc pumps
zapatillas de running Adidas ritmo medio talla 34
zapatillas de running Adidas ritmo medio talla 34
New Balance Fresh Foam X Hierro 9
theyre Yeezy Season approved
Мужские Adidas haven белые кроссовки
Мужские Adidas haven белые кроссовки

Popular reviews

Hoka Bondi 9
Hoka Bondi 9
adidas Adistar 1 Laufschuhe
adidas Adistar 1 Laufschuhe
Adidas originals Boost 380 Earthly
Adidas originals Boost 380 Earthly
adidas Originals X Pro
adidas Originals X Pro
T-shirt adidas Own The Run Graphic cinzento preto
T-shirt adidas Own The Run Graphic cinzento preto
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Brooks Adrenaline GTS 24
Brooks Ghost Max 2
Brooks Ghost Max 2
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New Balance Fresh Foam X 1080 v14
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ozelia sneakers adidas originals 39-40s quicri shared magmau
Adidas Crazyflight Team
Adidas Crazyflight Team

Testing process

yeezy runner 700 - Cut in half
1. We cut 39-40s in half to be able to see what's inside and do accurate tests.
yeezy runner 700 - 20 parameters
2. In our lab, we measure and assess over 20 parameters for each 39-40.
yeezy runner 700 - Comparing the results
3. Our tests are standardized, and our results are comparable.
yeezy runner 700 - Wear test
4. We also wear test 39-40s in their appropriate settings.
yeezy runner 700 - No bias
5. No bias: we buy all the 39-40s on our own and accept no sponsorships.
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