What kind of backpack is Michael using on?

[paullantz]

What model of backpack is Michael R. using when he is on the beach in the California segment (Pfeiffer Beach?).
Looks very spacious.

[Christopher Sanderson]

A ThinkTank Airport Addicted

[KeithR]

My fist thought was that it was capable of carring the kitchen sink  
My next thought was where was the rip cord  

What model of backpack is Michael R. using when he is on the beach in the California segment (Pfeiffer Beach?).
Looks very spacious.
[a href=\"index.php?act=findpost&pid=120067\"][{POST_SNAPBACK}][/a]