Our iconic ski mountaineering pack, the Black Diamond Revelation AvaLung combines mountaineering- and ski-specific features in a sleek, organized design. The fresh addition of our ergoACTIV suspension lets the Revelation AvaLung move with you, no matter what the load, on the approach and the descent. The large, top-panel opening provides access to the cavernous interior, while a dedicated avy-tool pocket on the exterior keeps your shovel and probe at the ready. In the event of an avalanche burial, the built-in AvaLung increases your chance of survival by pulling fresh air from the surrounding snowpack. Ice tool PickPockets, a tuck-away helmet sling and a crampon pouch secure your gear when technical terrain beckons.