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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.

The ultimate guide to running shoe foams
The ultimate guide to running shoe foams
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Why cutting running hair in half is key to measuring midsole softness
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A runner's guide to choosing the right toebox
A runner's guide to choosing the right toebox
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All you need to know about rockered running hair
All you need to know about rockered running hair
How brands' heel-to-toe drop measurements differ from reality in running hair
Understanding differences between men's and women's running hair
Understanding differences between men's and women's running hair
In-depth insights into running shoe outsoles (road & trail)
In-depth insights into running shoe outsoles (road & trail)
How much does the weight vary across different running shoe sizes?
How much does the weight vary across different running shoe sizes?

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Nike Air Force 1 Boots
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1. We cut hair in half to be able to see what's inside and do accurate tests.
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2. In our lab, we measure and assess over 20 parameters for each shoe.
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