Root for your favorite team when you wear the Under Armour Kids' UT Rio Grande Valley Vaqueros School Short Sleeve T-shirt. It is made of 60% cotton and 40% polyester. The short sleeves keep you cool, and its crew neckline creates a casual look. The UT Rio Grande Valley Vaqueros graphics show off your team spirit. Under Armour Kids' UT Rio Grande Valley Vaqueros School Short Sleeve T-Shirt Black, Medium - NCAA Youth Apparel at Academy Sports