Take to the trails in the low-profile design of the Nike Zoom Terra Kiger 3, built to fit like a track spike and power through any terrain. Breathable Flymesh upper with Dynami Flywire technology for a snug, locked-down fit. Zoom Air units in the heel and forefoot for responsive cushioning. 4mm heel-toe drop. Environmentally preferred rubber outsole with sticky center lugs for extra traction on wet surfaces. Wt. 7.6 oz.