1. No movement fluidity
An obstacle = need to stop to carry the luggage
Not ergonomic gesture = the arm is twisted
Main axis : Create a product allowing an intuitive carrying to improve fluidity
2. The offer stuff I take with me
Keep bag at hand = fast and easy access 
But it can easily fall and disturb me, plus the luggage kick on my foot when I walk
Secondary axis : Create a product evolving with the user needs during the walk
"Companion, le baggage qui vous épaule"
The team and the monster mock up to validate our concept :)