Description :The Nike Zoom Jana Star II is a track racing spike designed and sized for the specific needs of the female runner. Ideal for 400-3,200 meters, jumping and hurdling. Minimal and breathable mesh upper reinforced with synthetic overlays for zonal support. Minimal EVA wedge offers lightweight cushioning. Four-spike nylon plate provides optimal traction on a variety of surfaces. Solid rubber heel gives traction. Wt. 5.0 oz.