Aether Pro 70Osprey's stripped down, streamlined and svelte Aether Pro 70 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