Under Armour - Knockout Tank. Color Viral Blue/Black. On sale for $26.21. MSRP $35.00.. 4.6 out of 5 stars+7Brand NameUnder ArmourProduct NameKnockout TankGenderWomen'sColorViral Blue/BlackPrice$26.21MSRP: $35.00Rating5Rated 5 stars out of 5(21)