Expedition Pack
Jargon
Definition
A larger backpack that typically ranges in size from 65 litres + in capacity and designed for hauling large and/or heavy loads usually for extended hikes. These larger capacity packs are usually very robust with additional padding to deal with the additional weight often resulting in a heavier pack even before you start adding your own gear.
Expedition packs are often used by commercial guides who will be carrying additional gear for the group.
Osprey AETHER™ PLUS 100. This is a beats of a pack designed to carry big loads in comfort