Guides

We go down the rabbit hole when it comes to running shoe technologies, features, and lab tests. See all our in-depth guides.

Latest reviews

Popular reviews

Testing process

How we test - Cut in half
1. We cut Spring shoes in half to be able to see what's inside and do accurate tests.
How we test - 20 parameters
2. Puma Suede Platform SD Sneakers Spring shoes 364718-10.
How we test - Comparing the results
3. Eilish McColgan on running.
How we test - Wear test
4. Snow Boots GEOX J Magnetar A J16ACA 0CEFU C0735 S Navy Red.
How we test - No bias
5. No bias: we buy all the Spring shoes on our own and accept no sponsorships.