Meet HeatGear® Sonic: UA’s newest and greatest baselayer innovation. We started the “performance” revolution in sportswear with the original HeatGear®. But since “relentless innovation” is part of our motto, we didn’t stop there. This latest fabric takes comfort to the next level—lighter, with a sleek, softer feel that you can wear all day.
Ultra-soft, smooth fabric provides extreme comfort with very little weight
4-way stretch fabrication allows greater mobility and maintains shape