Union × Nike Air Jordan 4 SP Desert Moss 25.5cm | 900+ shoes reviewed and cut in half

13 currently testing

14 Air Jordan 4 Retro GG "Dark Obsidian"

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Guides

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 shoes in half is key to measuring midsole softness
John Wall in the Air Jordan 13
John Wall in the Air Jordan 13
A runner's guide to choosing the right toebox
A runner's guide to choosing the right toebox
Air Jordan 4 Retro Military Black PS
Air Jordan 4 Retro Military Black PS
Original Air Jordan 7 HOF Sample from 2009 shown below
Original Air Jordan 7 HOF Sample from 2009 shown below
How brands' heel-to-toe drop measurements differ from reality in running shoes
Understanding differences between men's and women's running shoes
Understanding differences between men's and women's running shoes
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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Testing process

Union × Nike Air Jordan 4 SP Desert Moss 25.5cm - Cut in half
1. We cut shoes in half to be able to see what's inside and do accurate tests.
Union × Nike Air Jordan 4 SP Desert Moss 25.5cm - 20 parameters
2. Pro Stars inspired Air Jordan 5.
Union × Nike Air Jordan 4 SP Desert Moss 25.5cm - Comparing the results
3. Air Jordan XX8 Finals PEs.
Union × Nike Air Jordan 4 SP Desert Moss 25.5cm - Wear test
4. Air Jordan Essentials Men's Woven Pants.
Union × Nike Air Jordan 4 SP Desert Moss 25.5cm - No bias
5. Red Flint Jordan 13.
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