TM 10-8415-209-10 TM 8415-10/2 2-4.  DONNING THE CHEMICAL PROTECTIVE OVERGARMENTS (BDO, OG84, CPOG). Table 2-3.  Size Prediction Chart for: Suit, Chemical Protective (BDO OG84, CPOG) Over Over Over duty Over arctic wear, underwear uniform field coat parka and trousers Waist Size 23" XXX-S XX-S X-S S 27" XX-S X-S S M 31" X-S S M L 35" S M L X-L 39" M L X-L XX-L 43" L X-L XX-L XX-L 2-17