What makes this covert?
“Front access zippered audio pocket with hidden audio port.” ???
Audio pocket w hidden audio port
Guess it has a built in 4 inch 3,5mm m to f adapter…
So you can covertly have your earbuds plugged into your bag, instead of the MP3 player inside your bag
And your MP3 player will covertly continue playing, draing it’s battery whilst the bag is idle on your seat back