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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

adidas ultraboost 20 lab marathon running shoessneakers - Cut in half
1. We cut shoes in half to be able to see what's inside and do accurate tests.
adidas ultraboost 20 lab marathon running shoessneakers - 20 parameters
2. nike sfb field 2 20 cm leather boots bruin.
adidas ultraboost 20 lab marathon running shoessneakers - Comparing the results
3. Our tests are kids, and our results are comparable.
adidas ultraboost 20 lab marathon running shoessneakers - Wear test
4. trekker boots scarpa gecko 72602 351 taupe mango.
adidas ultraboost 20 lab marathon running shoessneakers - No bias
5. ankle boots bronx 47231 c sand.