Under Armour - Knockout Tank. Color Viral Blue/Black. On sale for $27.34. MSRP $35.00.. 4.6 out of 5 stars+8Brand NameUnder ArmourProduct NameKnockout TankGenderWomen'sColorViral Blue/BlackPrice$27.34MSRP: $35.00Rating5Rated 5 stars out of 5(21)