Under Armour Kids - 2-Pack Solid Performance Boxer (Big Kids). Color Red. Low Stock. On sale for $15.99. MSRP $19.99.. 4.9 out of 5 stars2 left in stockBrand NameUnder Armour KidsProduct Name2-Pack Solid Performance Boxer (Big Kids)ColorRedPrice$15.99MSRP: $19.99