Under Armour - Knockout Tank. Color Matrix Green/White. On sale for $29.93. MSRP $35.00.. 4.6 out of 5 starsAdd to favorites. 0 people have favorited this+7Brand NameUnder ArmourProduct NameKnockout TankGenderWomen'sColorMatrix Green/WhitePrice$29.93MSRP: $35.00Rating5Rated 5 stars out of 5(21)