I've got 44o miles in my Adidas Boston Boost. Not sure if they count as "flats" as such, or that they're quite as springy as they once were, but I still happily use them for tempo runs and minor races. I think the Boost foam seems to have pretty good longevity.
I've got 44o miles in my Adidas Boston Boost. Not sure if they count as "flats" as such, or that they're quite as springy as they once were, but I still happily use them for tempo runs and minor races. I think the Boost foam seems to have pretty good longevity.