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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 990v4 in half to be able to see what's inside and do accurate tests.
How we test - 20 parameters
2. New balance xc-72 nb rose ivory men unisex casual lifestyle 990v4 uxc72ia-d.
How we test - Comparing the results
3. New Balance Men's ML565V1 in Blu.
How we test - Wear test
4. New Balance Men's 997H in Blue Black Synthetic.
How we test - No bias
5. No bias: we buy all the 990v4 on our own and accept no sponsorships.