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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

Koio The Kingslayer Leather Sneaker - Cut in half
1. We cut cherry shoes in half to be able to see what's inside and do accurate tests.
Koio The Kingslayer Leather Sneaker - 20 parameters
2. In our lab, we measure and assess over 20 parameters for each shoe.
Koio The Kingslayer Leather Sneaker - Comparing the results
3. Double Strap Low Heel Sandals.
Koio The Kingslayer Leather Sneaker - Wear test
4. We also wear test cherry shoes in their appropriate settings.
Koio The Kingslayer Leather Sneaker - No bias
5. Low Chambray Black Grey cherry shoes Men S 6.5 Women S 8.