Under Armour Graphic Baseball T-Shirt - Men's If your brand is baseball, there's no other option than an Under Armour Baseball T-Shirt. Lightweight Charged Cotton® brings the fast-drying ability of synthetic with the super-soft feel of natural cotton. It's equipped with UA's Signature Moisture Transport System to pull sweat right off the skin. HeatGear® allows this shirt to reach its top performance from 75-100º. Durable ribbed collar. 100% cotton. Imported.