I have the Aqualung departure bag it fits all my gear in it. The fins are the aqualung hot shots designed to go with this bag as they fit along the sides and ur gear goes in the middle. I have a set of gear, very streamlined and bought and constructed for traveling light in mind. 3-5mil wetsuit fits on top as well. None of my gear gets checked. I believe Aqualung has specific gear also designed for this bag and travel in mind too.