The British Under Body Armor Combat Shirt (UBACS) is a lightweight and comfortable polyester shirt designed for breathablity while wearing body armor. Protective padding in the sleeves can be removed. Camo pattern is the desert variant of the DPM camo.
 
Lightweight breathable mesh 100% polyester
Shoulder hook and loop patches
Arm pockets
Removable arm padding
Velcro arm closures
These are military surplus but in excellent/like new condition.