The New Balance Sigma Aria track shoes excel in 200m to 400m races with its flexible upper that stays comfortable over long distances. Breathable knit upper with external film for a secure fit. Traditional lace-up closure. Comfort tongue and collar. Full length Pebax plate provides traction, flexibility, and speed. Removable six-spike configuration for maximum traction. Rubber outsole provides reliable traction. Imported. Measurements: Weight: 6 oz Product measurements were taken using size 11, width D - Medium. Please note that measurements may vary by size. Weight of footwear is based on a single item, not a pair.