The Nike Zoom LJ 4 is designed for the serious long jump and pole vault athlete looking for the latest in jumping technology. No-sew synthetic leather midfoot provides lightweight structured support. A forefoot lockdown strap and zippered shroud deliver a snug secure fit. Hard-density EVA wedge adds durable cushioning. 3/4-length Phylon™ plate with seven replaceable spikes gives powerful traction. Forefoot plate features dynamic flex for a more natural foot plant on takeoff. Includes 1/4 pyramid spikes and a wrench. Wt. 8.2 oz.