900+ shoes reviewed and cut in half

13 currently testing

14 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 X-RAY Glitch Sneaker in Schwarz & Blau - Cut in half
1. We cut shoes in half to be able to see what's inside and do accurate tests.
Puma X-RAY Glitch Sneaker in Schwarz & Blau - 20 parameters
2. PUMA Liga Sideline pants.
Puma X-RAY Glitch Sneaker in Schwarz & Blau - Comparing the results
3. PUMA Wild Rider Layers Mens Sneakers.
Puma X-RAY Glitch Sneaker in Schwarz & Blau - Wear test
4. We also wear test shoes in authentic appropriate settings.
Puma X-RAY Glitch Sneaker in Schwarz & Blau - No bias
5. No bias: we buy all the shoes on our own and accept no sponsorships.