Osprey Ultralight Stuff Backpack vs Osprey Sirrus 24 Womens Hiking Backpack

The main difference between the Osprey Ultralight Stuff Backpack and the Osprey Sirrus 24 Womens Hiking Backpack is that the Ultralight Stuff Backpack has Packable / Foldable (Folds into its built-in storage pocket) while the Sirrus 24 Womens Hiking Backpack does not.

Osprey Ultralight Stuff Backpack Front View
Osprey Sirrus 24 Womens Hiking Backpack Side View
Specs Brand Osprey Osprey
Name Ultralight Stuff Backpack Sirrus 24 Womens Hiking Backpack
Category Hiking Womens
Sub Category Daypack Hiking
Capacity (L) 18L 24L
Dimensions (in) 17 x 9 x 7 19.3 x 11.8 x 11.8
Weight (lb) 0.2 2.6
Fabric 40D Nylon Ripstop 210D Nylon Crosshatch
Color 4 colors and patterns 3 colors and patterns
Warranty Osprey Lifetime Warranty Osprey Lifetime Warranty
Release Date May 30, 2015 July 27, 2016
Rating 4.6 4.7
Price Under $50 Under $150
General Features Shoulder Straps Breathable mesh shoulder straps Adjustable shoulder straps
Sternum / Chest Straps Adjustable sternum strap with safety whistle
Hip Belt / Waist Strap Hipbelt with pockets
Main Compartment Access Normal zipped access Normal zipped access
External Pockets 1 zipped top pocket and 2 side pockets Large top panel zippered slash pocket and dual side stretch mesh pockets
Side Pockets Side pockets can fit water bottle Side pockets can fit water bottle
Water Bottle Yes Yes
Handles Top grab handle Top grab handle
Loops and Attachments Stow-on-the-Go trekking pole attachment, ice tool loop with bungee tie-off
Travel Features Packable / Foldable Folds into its built-in storage pocket
Compression Straps External compression straps
Hiking / Backpacking Features Back Panel 3D tensioned breathable mesh backpanel
Rain Cover Integrated raincover
Load Lifters Yes
Internal / External Frame LightWire alloy internal frame
Ventilated Back Yes
Adjustable Length Torso Multiple torso size options with torso adjustability
Hip Belt Pockets Yes
Trekking Pole Holders Yes
Hydration Features Hydration Compatible Yes

You're currently comparing the Ultralight Stuff Backpack by Osprey against the Sirrus 24 Womens Hiking Backpack by Osprey.


Osprey 's Ultralight Stuff Backpack is a Hiking backpack with Daypack features while Osprey's Sirrus 24 Womens Hiking Backpack is a Womens backpack with Hiking features.

The Osprey Ultralight Stuff Backpack has a capacity of 18L (liters), weighs 0.2 pounds and it's dimensions in inches are 17 x 9 x 7. It's made of 40D Nylon Ripstop and is available in 4 colors and patterns in comparison the Osprey Sirrus 24 Womens Hiking Backpack's capacity is 24L with a size of 19.3 x 11.8 x 11.8 inches. Constructed from 210D Nylon Crosshatch it weighs 2.6 pounds and is available in 3 colors and patterns.