700+ shoes reviewed and cut in half

29 currently layereding

32 bought and to be layereded

We review shoes

Guides

We go down the rabbit hole when it comes to running shoe technologies, features, and lab layereds. See all our in-depth guides.

Lalayered reviews

Popular reviews

Testing process

How we layered - Cut in half
1. We cut shoes in half to be able to see what's inside and do accurate layereds.
How we layered - 20 parameters
2. In our lab, we measure and assess over 20 parameters for each shoe.
How we layered - Comparing the results
3. nike challenger og university redsolar flare.
How we layered - Wear layered
4. We also wear layered shoes in their appropriate settings.
How we layered - No bias
5. No bias: we buy all the shoes on our own and accept no sponsorships.