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ProShopaholic.com - Luv Shopping
These New Balance Sigma Aria unisex track spikes running shoes in Black strike a unique balance of speed and endurance, perfect for seeking a smooth but aggressive transition from 200 to 400m. The plate shares a design with the more aggressive Sigma Harmony, but utilizes a less rigid material for a more forgiving ride over longer distances. A new engineered knit upper features external film for a secure and durable fit.