This Under Armour Men’s HeatGear Flyweight Fitted Shortsleeve Shirt drops from $39.99 to $17.99 at Under Armour Outlet. Shipping adds $3.99, or spend $25 and use our code BRADSUAGEAR to bag free shipping. Even with shipping, this is the best price we could find anywhere. This shirt is lightweight, with mesh panels for added breathability. It comes in 2 colors at this price, and in another color at $29.99, although not all size/color combos are available. Sales tax is charged in most states.