adizero Boston vs. adizero Ace

[Scott Douglas]

How much higher is the midsole on the adizero Boston compared to the Ace, and what's the heel-to-forefoot ratio for both?

[Joe Rubio]

Don't really know. Let me email the folks at Adidas and find out for ya. I'll let ya know once I hear back.

Joe

[Joe Rubio]

Here's what our rep Chris Eckman sent over:

Hey Joe,

I spoke to Jen Valentine and Kohei Hagio and here is the result:

-The Boston has a ratio of 12 mm Forefoot/ 24 mm Heel

-The Ace has a ratio of 12 mm Forefoot/ 23 mm Heel

I hope that helps. Let me know if you have any other questions. Thanks
again and I hope all is well in SLO

Thanks,

Chris Ekman

[Scott Douglas]

Fantastic; thanks. Would you say the two's midsoles are equally firm?

[Joe Rubio]

Scott,

The density is roughly the same, the fact the Ace has a slightly lower heel height means it's a tad more firm.

Joe