You are using a web browser we don't support. Please use the latest version of one of these browsers.

Mozilla Firefox

Google Chrome

Apple Safari

Microsoft IE

Back to top

This product is no longer available.


  • Shoulder straps and hipbelt feature thoughtfully designed angles and varying padding thickness to accommodate a woman's shoulders, chest and hips
  • Torso length adjusts easily and precisely over a 5 in. range to provide an exact fit; extra pads on the dual-density hipbelt extend up to 3 in. on each side
  • Lumbar pad and back panel are covered in spacer mesh for enhanced cushioning and ventilation
  • Peripheral-hoop alloy frame provides a light and flexible structure that effectively transfers load weight to the hipbelt
  • Women-specific pack body provides freedom of movement with a narrower and deeper design than a men's pack; lower load position helps ensure an optimum center of gravity
  • Top-loading design features a floating lid that extends to handle bulky gear and overloads; externally accessible lower compartment accommodates a sleeping bag
  • External hydration sleeve in the back panel simplifies refilling and helps protect pack contents from spills (hydration reservoir sold separately)
  • Trekking pole attachment lets you stow and remove poles on the go; poles tuck between your arm and pack with a side loop and an adjustable shockcord on the left shoulder strap
  • Zippered lid pocket, 1 front and 2 side stretch-woven pockets and zippered hipbelt pockets make it easy to organize and access often-used gear
  • 2 ice axe loops let you lash tools or extra gear on the outside of the pack
  • Side compression straps let you cinch down loads for jostle-free carrying; sleeping pad straps on the pack's base adjust easily to hold a variety of shapes and sizes of pads
  • The Osprey Viva 50 pack body is made of 210-denier double ripstop nylon; pack base is made of 600-denier polyester


View all Osprey Backpacking Packs

REI membership


Best Use Backpacking
Frame Type Internal
Gear Capacity (L) 50 liter
Gear Capacity (cu. in.) 3,051 cubic inches
Weight 3 lbs. 8 oz.
Adjustable Torso Yes
Fits Torso 14 - 19 inches
Fits Waist/Hips 26 - 42 inches
Material(s) Ripstop nylon/polyester
Frame Material Metal alloy
Number of Stays 1 peripheral hoop
Pack Access Top/bottom
Number of Exterior Pockets 6 + main compartment
Sleeping Bag Compartment Yes
Gender Women's
Backpack Style Lightweight backpack

The REI Difference

100% satisfaction guaranteed

We stand behind everything we sell. If you are not satisfied with your REI purchase, you can return it for a replacement or refund within one year of purchase.

REI's guarantee doesn't cover ordinary wear and tear or damage caused by improper use or accidents.

If your item has a manufacturing defect in its materials or workmanship, you can return it at any time. See our limited warranty.

Gear & advice you can trust

At REI, we live and breathe the outdoors, and we're passionate about sharing our expertise with people of all skill levels. Whether you're new to the outdoors or a seasoned explorer, we'll take the time to understand your needs and help you find the right gear for you.

10% annual member refund

Anyone can shop at REI, but for a one-time $20 fee you can become an REI member and enjoy a lifetime of benefits. These include an annual member refund, typically 10% back on eligible purchases.*



*10% is typical but not guaranteed. Your refund is based on eligible purchases, which exclude REI gift cards, services, fees, REI Adventures trips, REI Garage, and discounted items. Learn more