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

PUMA Suede Classic XXI Sneakers JR in High Risk Red White - Cut in half
1. We cut shoes in half to be able to see what's inside and do accurate tests.
PUMA Suede Classic XXI Sneakers JR in High Risk Red White - 20 parameters
2. In our lab, we measure and assess over 20 parameters for each shoe.
PUMA Suede Classic XXI Sneakers JR in High Risk Red White - Comparing the results
3. Our tests are standardized, and our results are comparable.
PUMA Suede Classic XXI Sneakers JR in High Risk Red White - Wear test
4. We also wear test shoes in their appropriate settings.
PUMA Suede Classic XXI Sneakers JR in High Risk Red White - No bias
5. You want a super-comfy shoe that displays extraordinary workmanship both inside and out.