“Z” PAK – TRAUMA BAG #ZPAK01 This foldable trauma bag insert makes finding the items you need quick and easy. It is designed to hold all the essential trauma supplies, as well as a “C” cylinder for oxygen. The insert is constructed of nylon pack cloth and clear vinyl with YKK zippers that provide secure closure for the pockets. This weighs 48 oz. and has an open dimension of 34”L x 18“W. Designed to fit in any trauma bag with a main compartment opening of at least 18”L x 9“W x 11”D.