Osprey Siskin 8 Hydration Backpack vs Osprey Sirrus 24 Womens Hiking Backpack

The main difference between the Osprey Siskin 8 Hydration Backpack and the Osprey Sirrus 24 Womens Hiking Backpack is that the Siskin 8 Hydration Backpack has Internal Compartments (Internal scratch-free slash pocket) while the Sirrus 24 Womens Hiking Backpack does not.

Osprey Siskin 8 Hydration Backpack Front View
Osprey Sirrus 24 Womens Hiking Backpack Side View
Specs Brand Osprey Osprey
Name Siskin 8 Hydration Backpack Sirrus 24 Womens Hiking Backpack
Category Hydration Womens
Sub Category Outdoor Hiking
Capacity (L) 8L 24L
Dimensions (in) 18.5 x 8.5 x 6.9 19.3 x 11.8 x 11.8
Weight (lb) 1.2 2.6
Fabric 900x600D Polyester 210D Nylon Crosshatch
Color 3 colors and patterns 3 colors and patterns
Warranty Osprey Lifetime Warranty Osprey Lifetime Warranty
Release Date December 5, 2018 July 27, 2016
Rating 4.8 4.7
Price Under $100 Under $150
General Features Shoulder Straps Adjustable shoulder straps Adjustable shoulder straps
Sternum / Chest Straps Adjustable sternum strap with magnetic valve Adjustable sternum strap with safety whistle
Hip Belt / Waist Strap Hipbelt with pockets
Main Compartment Access Full front zipped access Normal zipped access
External Pockets Top zipped pocket Large top panel zippered slash pocket and dual side stretch mesh pockets
Internal Compartments Internal scratch-free slash pocket
Side Pockets Side pockets can fit water bottle
Water Bottle No Yes
Handles Top grab handle Top grab handle
Loops and Attachments LidLock helmet attachment, ;oop for blinky light attachment Stow-on-the-Go trekking pole attachment, ice tool loop with bungee tie-off
Travel Features Compression Straps External compression straps External compression straps
Hiking / Backpacking Features Back Panel Mesh-covered extra deep ridged foam with center air channel 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
Reflective Safety Strips Reflective accent
Hydration Features Bladder Size Includes Osprey Hydraulics LT 2.5L reservoir by Hydrapak
Hydration Compatible Yes Yes

You're currently comparing the Siskin 8 Hydration Backpack by Osprey against the Sirrus 24 Womens Hiking Backpack by Osprey.


Osprey 's Siskin 8 Hydration Backpack is a Hydration backpack with Outdoor features while Osprey's Sirrus 24 Womens Hiking Backpack is a Womens backpack with Hiking features.

The Osprey Siskin 8 Hydration Backpack has a capacity of 8L (liters), weighs 1.2 pounds and it's dimensions in inches are 18.5 x 8.5 x 6.9. It's made of 900x600D Polyester and is available in 3 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.