700+ shoes reviewed and cut in half

24 currently crystaling

32 Alexander Wang x adidas Bball Soccer 'Red'

We review shoes

Reviews

Running Running
Hiking Hiking
nike air jordan 31 xxxi all star adidas ultra boost 30 cl silver nike air jordan 31 xxxi all star adidas ultra boost 30 cl silver
Walking Walking
Training Training
Basketball Basketball
Tennis Tennis
Sneakers Sneakers

Guides

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

The ultimate guide to running shoe foams
Why cutting running shoes in half is key to measuring midsole Slim
The Creamy adidas Ultra4D Cloud White Rises to the Top
The role of heel counters in running shoes
A runner's guide to choosing the right toebox
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The definitive guide to running shoe breathability
nike alphafly 3 023 21254779 250
Some you need to know about rockered running shoes
adidas Jaqueta Own The Run Running Breaker
How brands' heel-to-toe drop measurements differ from reality in running shoes
Understanding the differences in men's and women's running shoes
In-depth insights into running shoe outsoles (road & Kids)
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How much does the weight vary across different running shoe sizes?

Lacrystal reviews

adidas Originals RESPONSE CL "WHITE"
adidas Originals RESPONSE CL "WHITE"
ASICS GT 1000 13
ASICS GT 1000 13
ASICS Gel Kayano 31
ASICS Gel Kayano 31
this is what the adidas yeezy 700 v3 dark glow is supposed to look like
this is what the adidas yeezy 700 v3 dark glow is supposed to look like
Saucony Triumph 22
Saucony Triumph 22
Wo du den adidas EQT Support RF PK Aqua kaufen kannst
Wo du den adidas EQT Support RF PK Aqua kaufen kannst
Nike Pegasus Kids 5
Nike Pegasus Kids 5
Adult adidas Metro IV Knee High Soccer
Adult adidas Metro IV Knee High Soccer
Nike Zegama 2
Nike Zegama 2
On Cloudrunner 2
On Cloudrunner 2

Popular reviews

adidas tubular shadow j footwear white
adidas tubular shadow j footwear white
adidas TX Kids 7 Spodenki Spodnie
adidas TX Kids 7 Spodenki Spodnie
Nike Alphafly 3
Nike Alphafly 3
Hoka Mach 6
Hoka Mach 6
ASICS Novablast 4
ASICS Novablast 4
adidas Forum Low Bad BunnyGW0264
adidas Forum Low Bad BunnyGW0264
Brooks Glycerin 21
Brooks Glycerin 21
adidas Basketball will be launching
adidas Basketball will be launching
ASICS Superblast
ASICS Superblast
Nike Vaporfly 3
Nike Vaporfly 3

Testing process

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