Published by on July 7, 2026 The Under Armour tracksuit set in blue and black is perfect for active baby boys aged 6-9 months. This 2-piece set includes a jacket with long sleeves, zip closure, and a hood, along with matching activewear pants. Made of polyester fleece fabric, this tracksuit set is designed for comfort and warmth during fall, winter, and spring seasons. Ideal for activities like walking, play, running, and jogging, this set features a sports-themed athleisure style with accents like zippers and logos, making it suitable for both activewear and casual occasions.