This extra large 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 “D” cylinder for oxygen. The clear view pockets keep everything in plain sight. It is constructed of nylon pack cloth and clear vinyl with YKK zippers providing secure closure for the pockets. This weighs 40 oz. and has an open dimension of 35”L x 21“W. Designed to fit in any trauma bag with a main compartment opening of at least 21”L x 9“ W x 11”D.