"The Traverse 40 has what Exped calls a Switchback frame, that lets you curve the frame of the backpack on demand in order to increase the amount of ventilation between the pack and your back.
[please note that the 2014 Lightning lower side compression strap goes behing the side pocket, rather than over it]
All Exped backpacks include these ingenious little strap tidies. No more straps flapping in the wind!
The new Mountain Lite 40 were reviewed for the current issue of “Klettern-Magazin, 5/13″ and were awarded their “Recommended” stamp: