Under Armour Kids - Boxer Brief Underwear (Big Kid). Color Steel. On sale for $23.92. MSRP $26.00.. 5.0 out of 5 stars+5Brand NameUnder Armour KidsProduct NameBoxer Brief Underwear (Big Kid)ColorSteelPrice$23.92MSRP: $26.00Rating5Rated 5 stars out of 5(5)