900+ shoes reviewed and cut in half

13 currently testing

14 bought and to be Retropy

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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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Sustainable Topo athletic ST 3 Running Shoes | Testing process

PUMA CA Pro Heritage sneakers - Cut in half
1. We cut shoes in half to be able to see what's inside and do accurate tests.
PUMA CA Pro Heritage sneakers - 20 parameters
2. In our lab, we measure and assess over 20 parameters for each shoe.
PUMA CA Pro Heritage sneakers - Comparing the results
3. Knowing exactly when and where to add that extra bit to make a perfect shoe.
PUMA CA Pro Heritage sneakers - Wear test
4. We also wear test shoes in their appropriate settings.
PUMA CA Pro Heritage sneakers - No bias
5. RUN OF Mango colour-block sneakers.