Take the best parts of a BDU jacket - rip-stop fabric, mil-standard camo patterns, Velcro-tightening cuffs (to keep out snow, sand, dirt, and bugs), pockets, loop attachment points for patches - and blend that with a water-wicking base layer for your chest and back, and you get the US Military Gear Under Vests And Body Armor BDU.

Breathable Combat Shirt

The moisture-wicking fabric covers your torso and back, and is engineered to draw sweat and rain away from your body and hold it on the outside surface, where it can evaporate away without bothering you - unlike cotton BDU jackets. Plus, this Under Vests And Body Armor BDU moisture-wicking fabric is soft and incredibly comfortable.

You've got enough things to worry about. Play comfortably...and focus on winning.