Details: Light and fast, the New Balance XC900 v4 track spikes are designed to help you pick up the pace and set new records. These spikes feature a lightweight mesh upper with supportive screen print design inspired by speed and forward motion. A lightweight REVlite midsole delivers responsive cushioning and energy return, propelling you forward towards a photo finish. Mesh upper with track-inspired screen print that delivers high-speed style and lightweight structure. REVlite midsole for responsive, lightweight cushioning and energy return with every step. Aggressive rubber outsole with removable spikes for durable grip on the track. Includes 1/4" pyramid spikes and a wrench. Wt. 6.5 oz. Shipping to Canada is restricted for this product.