900+ shoes reviewed and cut in half

13 currently testing

14 bought and to be tested

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

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Testing process

Primigi girls Ariel boot - Cut in half
1. We cut shoes in half to be able to see what's inside and do accurate tests.
Primigi girls Ariel boot - 20 parameters
2. In our lab, we measure and assess over 20 parameters for each shoe.
Primigi girls Ariel boot - Comparing the results
3. Buttero Futura low-top sneakers Grün.
Primigi girls Ariel boot - Wear test
4. A sneaker that delivers an all-day comfort when worn.
Primigi girls Ariel boot - No bias
5. I hear these shoes make you run fast or something.