- Under Armour Toddler Size Chart - Under Armour Little Girls' Size Chart - All Under Armour® Apparel features a tagless design or tear-away tag with no left-over pieces. - The Under Armour® Kids UFO Tech Long Sleeve is ready for any adventure with its bold, out-of-this-world UFO graphic. Made from smooth, lightweight UA Tech™ fabric, it feels ultrasoft, dries quickly, and keeps kids cool and comfortable all day. Perfect for school, play, or weekend fun, this tee brings a mix of performance, comfort, and imagination to every outfit. - Crew neckline tee in a pullover style. - 100% polyester. - Machine washable. - Imported.