Studio : New Balance Publisher : New Balance Binding : Apparel Product Description Not legally approved - from hurdles to the hundred, the updated Sd100 is ready to tackle your next race with dominance. The six spike configuration provides traction and power in the forefoot, while a rubber heel is designed for additional protection in the Rearfoot. Drawing inspiration from the Vazee sigma, the Sd100 features an ankle-height bootie construction and sleek new synthetic forefoot for aggressive style. 0
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