UA Compression helps you work. It turns you into exactly what you want to be, every time you work out or compete. This is the baselayer built for heroic performance. Features: *This ultra-tight, second-skin fit delivers a locked-in feel that keeps your muscles fresh and your recovery time fast. *HeatGear fabric, with all the benefits of UA Compression, comfortable enough to be worn all day *4-way stretch fabrication allows greater mobility in any direction *Moisture Transport System wicks sweat away from the body *Anti-odour technology prevents the growth of odour causing microbes *UPF 30+ protects your skin from the harmful rays *Smooth, chafe-free flatlock seam construction