Create your own shock cord stash zone for adjustable, quick-grab storage on your Zeitgeist Pack , Catalyst Pack and Gemini Cargo Pack . The Bungee Booster is a quick and easy way to add some extra capacity (as well as some color) to any of our bags with parallel webbing daisy chains. Just lace the durable elastic cord through the loops of the daisy chain and slip the cord lock on for adjustability. Cut to length to fit whatever bag you choose.