Frustrated by wearing armbands for communication systems or beep flags? Have no fear, the Macron UEFA Underwear undershirt is a compression shirt with micro-mesh pocket inserts on each sleeve (2) as well as three on the back (1 upper and two lower).

The hugging slim fit is optimal for athletic upper body movement. Plus, it helps in the cold and wick the sweat away your jersey in the heat.

Note the European sizing - Size chart (link)