The Osprey Aether 70 Mountaineering Pack is built to be light, without sacrificing fit and carrying comfort. If you’re watching your weight, but still desire comfort, these are the packs for you. Starting from the ground up, utilizing and upgrading proven features while adding new and innovative concepts, and increasing functionality and fit. An ideal size for the majority of backpackers, the Aether 70 will carry what you need - whatever your favorite adventure. Featuring AirScape suspension, IsoForm Harness, and IsoForm CM™ hipbelt.