This piece is intriguing in its purpose. It's very similiar in style and dimensions to the ROK summer combat jacket, with only three differences: The inner chest camouflage flap has been removed, lower front pockets have been added, most importantly, jacket is lined in some undetermined waterproof membrane. However, the jacket being very short and considering there is no hood or provision to install one, makes it confusing as to why it has been waterproofed.