New Unisex Sigma Aria Track Spikes with 16 1/4 inch spikes and spike key…

Details The new Sigma Aria strikes 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. The full knit upper provides a sleek, sock-like fit, while a film exoskeleton provides durability and structure. Weight: 155 grams (5.5 oz) Engineered Knit Upper Sprinting spike for the advanced runner Bootie construction