For shorter rides, marathon racing, and even trail running, Osprey's Raven 6 pack has just the right amount of space. It's made from rip-stop nylon and contains a bunch of pockets: one for easy access to the 3-liter Hydraulics reservoir, a stretch mesh pocket, and a main compartment with tool organizer. Plus, the women's specific shoulder straps and female-friendly length make for an unparalleled fit. There is a rigid AirScape back panel that keeps you cool and won't deform when fully loaded. What's more, the Raven boasts compression straps, a helmet attachment, a hip belt with zippered pockets, and a supportive harness system for comfort that lasts all adventure long.