The line that separates you from being good and great can be mere seconds. Set yourself apart from the competition in the New Balance® SD400v3 sprint spike.Ideal for track-and-field events ranging from 50 m to 400 m.Sleek, lightweight mesh and synthetic upper materials.Lace-up closure.Thin comfort tongue and collar.Textile lining offers a great next-to-foot feel.Thin foam insole.Highly-responsive TPU plate.Aggressive eight-spike configuration delivers maximum traction.Includes eight removable spikes and wrench.Imported.Measurements: Weight: 5 ozProduct measurements were taken using size 9, width D - Medium. Please note that measurements may vary by size.