The adidas Adizero Boston 13 Running Shoes are designed to bridge the gap between daily trainers and race-day footwear. Featuring ENERGYRODS 2.0fiberglass propulsion rods that mimic the foot's natural anatomyand a dual-layer midsole of Lightstrike Pr Lightweight mesh upper contains a minimum of 50% recycled content. Textile lining and cushioned insole. Lace-up closure. Iconic three-stripe at the lateral side.