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  • Custom-moldable, anatomically contoured BioForm4 CM™ hipbelt and shoulder s balance firmness and cushioning for optimal support and comfort
  • Osprey certified custom molding is available in most REI stores—check your local store for availability
  • Back panel is lined with reversed spacer mesh for a smooth and breathable contact surface
  • Peripheral frame effectively transfers weight to the hipbelt; single 6061-T6 aluminum center stay helps maintain back panel shape
  • Top-loading main compartment can also be accessed through curved side zippers on each side of the pack body; wide-mouth sleeping bag compartment is easy to load and unload
  • Dual-compartment top pocket converts to lumbar pack with built-in belt
  • External hydration sleeve in the back panel simplifies refilling and helps protect pack contents from spills (hydration reservoir sold separately)
  • Roomy front pockets with coated zippers help keep often-used items handy; stretch-mesh front pocket makes it easy to quickly stash and access extra gear
  • Zippered hipbelt pockets and dual-access stretch-mesh side pockets provide secure storage and organization
  • The Osprey Xenith 75 pack features dual side compression straps, removable sleeping pad straps, trekking pole attachment and 2 ice-axe loops and handle wraps


Two multi-day hikers in Osprey packs gaze over a desert landscape

Take a technically stunning Osprey pack on your next hike, or trip around the world.

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View all Osprey Backpacking Packs

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Best Use Backpacking
Frame Type Internal
Gear Capacity (L)
75 liter
79 liter
83 liter
Gear Capacity (cu. in.)
4,577 cubic inches
4,821 cubic inches
5,065 cubic inches
5 lbs. 2 oz.
5 lbs. 6 oz.
5 lbs. 9 oz.
Adjustable Torso Yes
Fits Torso
18 - 20.5 inches
20 - 22.5 inches
22+ inches
Fits Waist/Hips
30 - 34 inches
33 - 37 inches
36+ inches
Material(s) High tenacity nylon/nylon oxford
Frame Material HDPE framesheet/metal alloy peripheral frame
Number of Stays Peripheral hoop/aluminum center stay
Pack Access Top/sides/bottom
Number of Exterior Pockets 8 + main compartment
Sleeping Bag Compartment Yes
Gender Men's

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