The collapsing duffel easily holds a full set of gear and keeps your costly regulator and computers protected. • The large mesh duffel zips into the end of the padded regulator bag creating a compact, easily stowed container. 29” down to 4” • 420 Nylon outer shell and Nylon reinforced mesh. • The padded reg compartment is designed to match the shape of the Pro Regulator Bag (AKB601). • YKK #5 zipper.