Under Armour Kids - Knockout Tank (Big Kids). Color Rebel Pink/White. On sale for $19.60. MSRP $28.00.. 4.7 out of 5 stars+3Brand NameUnder Armour KidsProduct NameKnockout Tank (Big Kids)ColorRebel Pink/WhitePrice$19.60MSRP: $28.00Rating5Rated 5 stars out of 5(3)