Do Under Armour shirts shrink?

Most synthetic fibers, including the polyester knits that make up moisture-wicking fabrics, don't shrink the way natural ones do. read more

Anything polyester like most Under Armour shouldn't shrink at all. Cotton will certainly. To keep garments from shrinking, use cold water when washing and hang to dry. read more

Under Armour will not shrink because the fabric is microfiber, or in other words, man made of many different combinations of fibers. The fibers are "fixed" and therefore cannot expand or retract the way cotton and other natural fibers do. read more