Under Armour Kids - Knockout Tank (Big Kids). Color Varsity Blue/Water. Low Stock. On sale for $26.45. MSRP $28.00.. 4.7 out of 5 stars1 left in stock+4Brand NameUnder Armour KidsProduct NameKnockout Tank (Big Kids)ColorVarsity Blue/WaterPrice$26.45MSRP: $28.00Rating5Rated 5 stars out of 5(3)