Using Klick Fix bar bag Mount You can Fit a Quickly removable Basket or Even a Back Pack* hanging off the handlebars
to Keep the O2 bottle in ,. then take it off and carry it off the Bike..

* They have several Models of packs .. Rixen & Kaul, KLICKfix Adaptersysteme Fahrradzubehör, Solingen, Taschen, Körbe, Werkzeug