Sized to accommodate a week's worth of backpacking or mountaineering gear, the Osprey Argon 85 backpack features an ergonomically enhanced suspension and hipbelt design specifically made for men. While most hiking, backpacking and climbing packs are all about stowing gear, Osprey's Argon 85 combines those storage options with a supportive AirScape backpanel, BioForm A/X features and a ReCurve Suspension for an exceptional fit. The Osprey Argon 85 also has an AquaSource ReCurve hydration pouch that connects either to the backpack's internal backpanel or on top of contents inside the pack. Like other Argon series backpacks, the Argon 85 has a removable top pocket that doubles as a lumbar pack for short excursions around your backcountry campsite. Lycra/nylon blended stretch panels along the front and side pockets easily expand to accommodate additional camping and outdoor gear without straining zippers and straps.