The fifth incarnation of the Hyper Rocket Girl shoe is an ideal option for female sprinters. At an amzingly light 144 grammes it is one of the lightest shoes in the ASICS range. Slip Lasting-For lightweight and flexibility. Upper is wrapped and stitched before it is glued to the midsole. Nylon Spike Plate-Pate in the sole which the spikes are screwed which increases the durability of the shoe and improves traction on all surfaces. Solid Rubber Outsole-Sole containing solid rubber provides enhanced durability and traction.Synthetic,Leather and Mesh Upper-Upper materials which are lightweight, comfortable and breathable enhancing performance and fit. Removable Spikes-Spikes in the sole which can be removed to allow customisation of the spike configuration. Receive a free set of spare spikes when you purchase these spike shoes. Simply state on your order form what length you require.