Under Armour HeatGear Sonic ArmourVent Short Sleeve Running T-Shirt

Meet HeatGear® Sonic: UA's newest and greatest baselayer innovation. Under Armour started the "performance" revolution in sportswear with the original HeatGear®. This latest fabric takes comfort to the next level-lighter, with a sleek, softer feel that you can wear all day. Hugs tightly onto your body like a second skin, this ultra soft, smooth t-shirt provide an extremely comfortable lightweight feel during intense workout. The t-shirt also features ArmourVent technology, which provides excellent breathability to keep you cool and comfortable during training