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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

Sandaler Xero Shoes - Cut in half
1. We cut shoes in half to be able to see what's inside and do accurate tests.
Sandaler Xero Shoes - 20 parameters
2. Minimalist Chunky Heeled Slip-On Suedette Classic Boots.
Sandaler Xero Shoes - Comparing the results
3. Our tests are standardized, and our results are comparable.
Sandaler Xero Shoes - Wear test
4. We also wear test shoes in their Techno settings.
Sandaler Xero Shoes - No bias
5. No bias: we buy all the shoes on our own and accept no sponsorships.