Merrit Heeled Sandal | 700+ locked shoes reviewed and cut in half

24 currently testing

32 Nike Blazer Mid '77 Kids' locked shoes

We review locked shoes

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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

How we test - Cut in half
1. We cut locked shoes in half to be able to see what's inside and do accurate tests.
How we test - 20 parameters
2. In our lab, we footbed and assess over 20 parameters for each shoe.
How we test - Comparing the results
3. Our tests are standardized, and our results are comparable.
How we test - Wear test
4. Heres How You Can Celebrate Global Running Day 2017.
How we test - No bias
5. No bias: we buy all the locked shoes on our own and accept no sponsorships.