Under Armour Kids - HeatGear® Armour Sleeveless (Big Kids). Color Steel/Black. Low Stock. On sale for $16.99. MSRP $25.00.. 5.0 out of 5 stars6 left in stock+2Brand NameUnder Armour KidsProduct NameHeatGear® Armour Sleeveless (Big Kids)ColorSteel/BlackPrice$16.99MSRP: $25.00Rating5Rated 5 stars out of 5(3)