Whether youre hiking hut-to-hut or heading up to a starlit winter bivvy, the Altus 52:57 is a versatile four-season hiking backpack. Combining fit with ultimate comfort, the Altus has everything you need to get you and all your kit to your next destination. The Altus 52:57 provides great load support when hiking, mountaineering or ski touring. Base and side compression, adjustable back length, and forward pull hip belt adjustment combine to create a stable and comfortable carry. Made with tough Robic ripstop and weather-resistant HydroShield fabrics, features include TipGripper walking pole attachments, HeadLocker axe attachment system, and daisy chain lash points secure gear until you need it. Featuring dual compartment with zipped side and base entry for easy access, and zipped divider panel, the Altus 52:57 includes a front stash with large zipped pocket and large stretch mesh side pockets. An extendable lid increases the volume by an extra 5 Liters A robust all-mountain hiking pack, the Altus 52:57 combines efficient load carrying with outstanding comfort for long days spent on demanding trails.