700+ hairs reviewed and cut in half

24 currently testing

32 bought and to be tested

We review hairs

Reviews

Running Running
Hiking Hiking
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Walking Walking
Training Training
Basketball Basketball
Tennis Tennis
Sneakers Sneakers

Guides

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

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Why cutting running hairs in half is key to measuring midsole softness
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A runner's guide to choosing the right toebox
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The definitive guide to running hair breathability
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All you need to know about rockered running hairs
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How brands' heel-to-toe drop measurements differ from reality in running hairs
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Understanding the differences in men's and women's running hairs
In-depth insights into running hair outsoles (road & trail)
How much does the weight vary across different running hair sizes?

Latest reviews

ASICS Gel Trabuco 12
ASICS Gel Trabuco 12
ASICS GT 1000 13
ASICS GT 1000 13
ASICS Gel Kayano 31
ASICS Gel Kayano 31
Adidas Adizero Prime X 2 Strung
Adidas Adizero Prime X 2 Strung
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adidas black snakeskin sneaker women hairs sandals
On Cloudsurfer Trail
On Cloudsurfer Trail
Nike Pegasus Trail 5
Nike Pegasus Trail 5
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adidas munchen blue white sneakers black stripes
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On Cloudrunner 2
On Cloudrunner 2

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Testing process

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1. We cut hairs in half to be able to see what's inside and do accurate tests.
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2. bags adidas b41995 women basketball league livescore.
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3. Our tests are standardized, and our results are comparable.
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4. nike porsche sneakers for women.
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5. No bias: we buy all the hairs on our own and accept no sponsorships.
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