Skip Navigation Website Accessibility


Osprey Exos 48 Ultralight Backpack

left in stock in

Low in store inventory, may be subject to change

When you're counting every ounce but you know the value of a truly comfortable pack, the Exos was developed just for you. Reach for the Exos 48 for the perfect mid-size ultralight, with plenty of room to put in the miles, but not so much that you're tempted to overpack. Highly experienced backpackers will appreciate industry-leading comfort and ventilation—without the weight it often adds—making it the perfect pack for ultralight multiday adventures. For those who really need a svelte carry, the removable floating lid makes way for an integrated FlapJacket that keeps your minimal gear contained in its stead. Our refined AirSpeed® suspension keeps you cool with maximum airflow between you and your pack, so each mile stays as comfortable as the last. Made with 100% recycled materials.


  • Load Range: 25 - 30lbs. / 11 - 14 kg.
  • Fabrics
    • Main: bluesign® approved recycled 100D high tenacity nylon ripstop, PFC/PFAS-free DWR
    • Accent: bluesign® approved recycled 400D high tenacity nylon, PFC/PFAS-free DWR
    • Bottom: bluesign® approved recycled 100D high tenacity nylon ripstop, PFC/PFAS-free DWR
Size Volume Dimmensions Weight
Small / Medium 2929 sq in. / 48L 29.53H X 14.17W X 11.81D in. / 75H X 36W X 30D cm.  2.767 lbs. / 1.294 kg 
Large / XLarge 3112 sq in. / 51L 31.5H X 14.17 W X 11.81D in. / 80H X 36W X  30D cm. 2.767 lbs. / 1.255 kg

  • Top pocket web loop attachment points
  • Removable floating lid with top- and under-lid zippered pockets
  • Integrated FlapJacket cover for lidless use
  • Internal hydration sleeve with center back hose port
  • Front stretch mesh pocket for stashing gear
  • Dual-access stretch mesh side pockets
  • Dual strippable side compression straps
  • Web lash points for attaching overloads
  • Removable sleeping pad straps
  • Dual ice axe loops with bungee tie-off
  • Dual zippered hipbelt pockets to keep essentials handy
  • Stow-on-the-Go trekking pole attachment
  • Sternum strap with integrated safety whistle
  • Hipbelt Pockets: Two hipbelt pockets for easy on-the-go access to necessities.
  • Adjustable Airspeed Suspension:  Injection-molded ladder adjustment system provides 4" of torso adjustability.
  • Increased Durability: Strong backpanel mesh and durable main body fabrics provide increased reliability.
Ultralight Airspeed Suspension
  • Injection-molded ladder adjustment system provides 4" of torso adjustability
  • Two size per gender design ensures perfect fit and allows for quick, easy adjustment
  • Stronger mesh and reduced seam design provides increased reliability for rigorous thru-hike usage
  • 4 mm powder coated LightWire frame
Exoform Harness
  • Seamless layered mesh provides improved comfort and cushioning
  • 15 mm adjustable slide sternum strap
Exoform Hipbelt
  • Zippered hipbelt pockets provide secure and accessible storage for on-trail essentials
  • Extended hipbelt shape increases carry comfort
  • ErgoPull closure provides leverage to ensure snug fit and optimal load transfer



Exos 48
Exos 48 Sizing
Torso SizePack Size
15" (38cm) -
16" (40.5cm) S
17" (43cm) S
18" (46cm) S or M
19" (48cm) S or M
20" (51cm) M or L
21" (53cm) M or L
22" (56cm) L
23" (58.5cm) L
24" (61cm) -
25" (63.5cm) -

Fit should not be compromised for any other considerations. Body shape and sizing varies from customer to customer. Not every customer will fit every pack. Adjustable packs allow customers to fine-tune the fit for optimal carry performance.

Shoulder Strap: The harness size and/or length of the strap affects how the pack stabilizes and wraps around the shoulder
Hipbelt Size: The hipbelt size and fit affects how the load transfers from the pack and carries on the hips
Torso Length: Pack size is based on the torso length

  • Sunday-Monday
  •  10am-6pm

    Holiday Hours May Vary
  • *Rental hours are subject to change without notice.
Contact Info