New with Tags Under Armour HeatGear Little Girls 6X White Cap Sleeve Top. This activewear top is perfect for girls who love to stay active. The cap sleeves and crew neck provide comfort and ease of movement during gym & training, track & field, school, and running & jogging activities. The top is made of 50% cotton/50% polyester material and is machine washable. The Under Armour logo on the front adds a touch of style to the top. Overall, this top is a great addition to any young girl's activewear collection.