The lightweight traction and high-performance fit of ASICS Hyper-Rocketgirl XC spikes create the perfect racing fit for intermediate athletes. Cross country runners will benefit from a contoured arch that delivers support and control. Run your best race with your feet wrapped in these lively colors. Comes with 9mm pyramid spikes and a wrench.Upper: Constructed with lightweight, breathable mesh. Flat laces reduce irritation. Synthetic overlays provide lightweight support.Midsole: Compression molded EVA midsole provides responsive cushioning. Outsole: Solid Rubber outsole provides enhanced durability and traction. Trusstic System® reduces the weight of the sole unit while retaining the structural integrity of the shoe.