【UNDER ARMOUR】Under Armour UA Compression SS Mock Baseball Junior Undershirt YMD (Height 135-145cm, Chest 64-72cm, Waist 54-62cm) Uses fabric with excellent stretch. Boasts high sweat absorption and quick-drying properties, making it easy to move in any action. Ventilation on the back. A jock tag (baseball-specific) for writing a number is used on the right hem. The 10th image is a reference photo with a different color. ■Material Body: Polyester 84% / Polyurethane 16% / Switching part: Polyester 88% / Polyurethane 12% Size: XXS or smaller