700+ shoes reviewed and cut in half

24 currently testing

32 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

Featuring an allover checker print that resembles the pattern on the lining of the shoe - Cut in half
1. We cut shoes in half to be able to see what's inside and do accurate tests.
Featuring an allover checker print that resembles the pattern on the lining of the shoe - 20 parameters
2. In our lab, we measure and assess over 20 parameters for each shoe.
Featuring an allover checker print that resembles the pattern on the lining of the shoe - Comparing the results
3. Our tests are standardized, and our results are comparable.
Featuring an allover checker print that resembles the pattern on the lining of the shoe - Wear test
4. We also wear test shoes in their appropriate settings.
Featuring an allover checker print that resembles the pattern on the lining of the shoe - No bias
5. No bias: we buy all the shoes on our own and Tuna no sponsorships.