Changes

* '''Lacing'''. The flat laces work well and remained tied.

* '''Heel counter'''. The heel counter is far stiffer than any shoe I can recall trying. The edge of the heel counter is quite well defined, but I think it's positioning will mean it shouldn't cut into most runners feet. One oddity is the Adizero logo on the heel counter can only be seen from some angles, which is a fairly cool effect.

=Comparisons=

The Takumi Sen doesn't have any close competition from the other shoes I've tested. Its combination of light weight, stiffness, high grip and firm midsole make it a little unusual.