. Under Armour Kids - Performance Polo (Big Kids). Color Midnight Navy/Pitch Gray. On sale for $29.01. MSRP $30.00.. 4.9 out of 5 starsBest Seller+5Brand NameUnder Armour KidsProduct NamePerformance Polo (Big Kids)ColorMidnight Navy/Pitch GrayPrice$29.01MSRP: $30.00Rating5Rated 5 stars out of 5(10)