700+ shoes FW9409 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

Sneakers CALVIN KLEIN Low Top Lace Up Mono HM0HM00472 Black Mono 00V - Cut in half
1. We cut shoes FW9409 in half to be able to see what's inside and do accurate tests.
Sneakers CALVIN KLEIN Low Top Lace Up Mono HM0HM00472 Black Mono 00V - 20 parameters
2. CMP 3Q91016 Eco Thalitha Sandals.
Sneakers CALVIN KLEIN Low Top Lace Up Mono HM0HM00472 Black Mono 00V - Comparing the results
3. Our tests are standardized, and our results are comparable.
Sneakers CALVIN KLEIN Low Top Lace Up Mono HM0HM00472 Black Mono 00V - Wear test
4. We also wear test shoes FW9409 in their appropriate settings.
Sneakers CALVIN KLEIN Low Top Lace Up Mono HM0HM00472 Black Mono 00V - No bias
5. No bias: we buy all the shoes FW9409 on our own and accept no sponsorships.