WHAT'S IT DO?
Meet HeatGear® Sonic: UA’s newest and greatest baselayer innovation. UA started the “performance” revolution with their original HeatGear® compression—the ultra-tight fit that increases muscle power…and makes you feel invincible. This latest UA fabric wears like a second skin so you get the same powerful compression, plus extreme comfort for all-day wear.
THE FUNDAMENTALS
What's My Size?