The are genuine military issued jackets. They are made of 50% Cotton and 50% Nylon. They have 4 pockets. Two side slashed pockets in the front and two pockets with hook and loop on the arms. The elbows are reinforced to be durable when crawling on the ground. High mandarin neck collar with hook and loop closure. Small area to put pencils or pens. SIZING GUIDE: HEIGHT Short Length – 63-67 Regular Length – 67-71 Long Length – 71-75 CHEST X-Small – Up to 33 Small – 33-37 Medium – 37-41 Large – 41-45 X-Large – 45-49