Mountaineering and Alpine climbing require special gear such as backpacks. Since 2012, for general mountaineering, winter mountaineering or multipitch climbs I have been using as a backpack the Simond Alpinism 22.
The Simond Alpinism 22 is designed for climbers, mountaineers and Ski touring use for day-long routes. It is a compact, sturdy, all-purpose bag. Its shape and volume make it suitable for all builds and lets to carry all the required gear for a day-long hike.