Description of Osprey Ariel 65 Backpack - Women's Known for their great fit and light weight the Osprey Ariel 65 backpack offers a woman specific fit and features in 55, 65, and 75 liter versions. Its AirScape suspension coupled with an IsoForm harness and IsoForm CM hipbelt maximize comfort and support making it ideal for extended trips through the backcountry. An ideal size for the majority of backpackers, the Ariel 65 will carry what you need - whatever your favorite adventure. Features: Lightweight women's design AirScape suspension IsoForm harness IsoForm CM™ hipbelt AirScape backpanel with nubbed foam and grip mesh covering provides superior breathability and ultra-comfortable pack to body contact. IsoForm harness in multiple sizes and gender specific cuts features spacer mesh surface with no sewn seams for superb comfort and contoured fit. IsoForm CM™ Hipbelts provide custom, heat molded fit in multiple sizes and gender specific cuts. Dual entry stretch woven side pockets allows easy access to water bottles. Welded stretch woven front pocket delivers extra carrying capacity. Ski/Trekking pole loops secure skis or poles for easy, stable transport. Spacious, zippered sleeping bag compartment provides organized load division and easy alternative access to main pack body. Removable sleeping pad straps are there when you need them, gone when you don't. Weight : Small - 4 lb. 5 oz. 1.96 kg. / Medium - 4 lb. 8 oz. 2.04 kg. Volume : Small - 3800 cu.in. 62 liters / Medium - 4000 cu.in. 65 liters