Under Armour Kids - Performance Polo (Big Kids). Color Pitch Gray Light Heather/Black. On sale for $18.00. MSRP $30.00.. 4.9 out of 5 stars+4Brand NameUnder Armour KidsProduct NamePerformance Polo (Big Kids)ColorPitch Gray Light Heather/BlackPrice$18.00MSRP: $30.00Rating5Rated 5 stars out of 5(10)