Carry basecamp worthy loads with skis to boot, or journey beyond the reach of resupplies. For backpacking, thru-hikes and alpine expeditions, the Aether AG™ Series has a pedigree like no other pack. We have set the bar for technical backpacking packs by combining Anti-Gravity™ technology with customizable fit and innovative features like our new convertible top lid to create a more capable and comfortable pack for long-haul load carryingon any multi-day excursion.When you need a pack that can carry heavy loads for up to a week or for a month, there is no better option than the Aether AG™ 85 pack. Removable top-lid converts to DayLid™ daypack Lower Inside-Out™ compression straps Additional main compartment access Integrated FlapJacket™ cover for lidless use Internal hydration reservoir sleeve Large front J-zip access to main compartment LightWire™ tensioned, full peripheral frame comfortably transfers pack load ANTI-GRAVITY™ BACKPANEL Top to bottom suspended mesh wraps shoulders, back and hips for a fully integrated backpanel fit