SLOW AND STEADY
The Structure Triax creates fortresslike heel stability via three densities of foam: a rigid medial post that tempers foot rolling, a medium-density foam to absorb heavier heel strikes, and a supersoft crash pad that channels foot plants forward from the moment of impact. Amazingly, despite all the discipline underfoot, it’s not at all clunky. Now in its 11th incarnation, this year’s Structure Triax improves upon its predecessors with a more rigid midfoot shank—which contributes to its more supportive ride—and lower arch to fit a wider segment of overpronators. With a relatively stiff flex, though, it is still best suited for slower runners. 12.3 oz; nike.com