A base layer that elevates your riding experience. The FXRG® Baselayer Tee features innovative fabric construction that works to monitor warmth, coolness, odor, and moisture wicking for comfort in all kinds of weather conditions. This lightweight men's performance shirt fits smoothly under riding gear. And because the fabric flexes as you move, it won't bulk, bunch, or stretch out. With this much innovation and technology, this tee is a serious upgrade from the thermal underwear bunched up in your underwear drawer. Time to upgradecheck out the specs for more.