Osprey's stripped down, streamlined and svelte Ariel Pro is made for type-two adventures that span days or months; alpine climbing expeditions with remote basecamps, or boundary-pushing thru-hikes through unknown landscapes where the only trail is the one you make. WIth one zipper and strengthened hardware, this pack provides worry-free dependability. The hipbelt and harness are interchangeable, and the hipbelt can be custom molded to achieve a fit that's as perfect as this pack. No matter how far you go, the Aether Pro is backed by our All Mighty Guarantee, forever.

• Removable floating top lid with zippered pocket for storing smaller items
• Integrated FlapJacket protects packed gear when top lid is removed
• Stow-on-the-Go trekking pole attachment allows you to stow your poles in steep terrain or whenever you need your hands free
• Dual removable ice tool loops with upper cord attachments
• Internal reservoir sleeve accommodates up to a 3L reservoir
• Dual front compression straps maintain a slim profile and stabilize loads
• Large, dual removable hipbelt pockets, one zippered and one with a cinch closure, keep a water bottle, snacks and smaller items close at hand
• Dual removable side compression straps stabilize loads or can be removed to save weight
• Reinforced cord loops to attach Osprey Daylite® daypack or Alpine Pocket
• Removable sleeping pad straps
• Sternum strap with whistle for moments when “safety third” doesn’t cut it*