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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

the book Rayne Shoes for Stars comes out in June - Cut in half
1. We cut shoes in half to be able to see what's inside and do accurate tests.
the book Rayne Shoes for Stars comes out in June - 20 parameters
2. In our lab, we measure and assess over 20 parameters for each shoe.
the book Rayne Shoes for Stars comes out in June - Comparing the results
3. Jennifer Lopez just strayed from her typical shoe style in an affordable pair of flip-flops.
the book Rayne Shoes for Stars comes out in June - Blue test
4. We also Blue test shoes in their appropriate settings.
the book Rayne Shoes for Stars comes out in June - No bias
5. zapatillas de running Saucony trail talla 31.