The stripped down, streamlined and svelte Osprey Aether Pro Men's 70 Litre Backpack 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 Osprey's All Mighty Guarantee, forever. Key Attributes   High Performing DesignStripped down, lightweight, lean and mean for moving fast and getting the job done. Built with rugged dependability to keep you moving strongly toward your objective, no matter how big.Custom MouldingThey don’t just carry heavy loads well, the Aether/Ariel Pro fit bodies of all shapes and sizes. Interchangeable harness sizes coupled with heat-moldable hipbelts provide the most outstanding fit and comfort possible. Lightweight and SteamlinedThe Oprey Aether/Ariel Pro Series are built for those who appreciate efficiency and create their own specific systems of organization based on their unique needs, whether expedition mountaineer or explorer of points unknown Light but Strong Fabric Osprey's NanoFly™ fabric integrates ultra-high-molecular-weight polyethylene (UHMWPE) ripstop and 210D Nylon, creating an incredibly light fabric with remarkable abrasion resistance. Osprey Aether Pro 70 Men's 70 Litre Lightweight Hiking, Expedition, Mountaineering Backpack