It was made from PU-coated nylon to counter the Soviet NBC capability with a general look closer to a load-bearing vest.
The two front pouches were manufactured from a double layer of PU-nylon material for rigidity and abrasion resistance, mounted on a double-thickness backing section.
[1] Each could hold a water bottle, mess tin or up to four 20-round magazines / 200 belted machine gun rounds and was fastened with a quick-release buckle of the same pattern as American ammunition pouches.
On the underside of the pack lid are two straps with similar green buckles to allow a rolled poncho or waterproofs to be stowed.
The '72 haversack could be repositioned to sit lower on the back allowing a radio or small bergen to be worn above it.