The Under Armour Womens Knockout Tank Top in a White colourway is one of the lightest, most breathable shirts Under Armour make and your new go-to for any sport, training, or activity. The material wicks sweat and dries really fast, featuring T-back straps with wordmark taping details and a dropped, shaped hem for enhanced coverage. It is made from a blend of 90% Polyester and 10% Elastane, offering ultra-soft, breathable fabric with 4-way stretch for greater freedom of movement.