Under Armour Boys' Size Chart Avenge the day or night in this Under Armour® Kids Iron Man tee. Fitted fit is snug, but not tight, for next-to-the-skin support without the squeeze of compression. Four-way stretch allows a wider range of movement and accelerates dry time. Anti-odor technology repels odor and inhibits bacterial growth for prolonged freshness. Moisture Transport System wicks perspiration away from the body and towards the surface where it can evaporate. UPF 30+ fabrication protects skin during outdoor activity by blocking harmful Ultraviolet A and Ultraviolet B rays (UVA and UVB). Classic crew neckline. Short-sleeve design. Iron Man allover graphic detail property of ©Marvel. Straight hemline. Logo hit at back neck. 84% polyester, 16% elastane. Machine wash, tumble dry. Imported. Measurements: Length: 23 in Product measurements were taken using size LG (14-16 Big Kids). Please note that measurements may vary by size.