Deuter Descentor 22 EXP Backpack
From the Editors of Freeskier:
The expandable main pocket has sleeves for both a probe and a hydration bladder, from which the tube runs down the insulated shoulder strap. Under the diagonal ski-carry system is a flap to hold your shovel, and the back panel doubles as a spine protector with great padding and airflow.The Pros: Built-in spine protector.
The Cons: Heavy for a smaller pack.