Osprey Siskin 8 Hydration Backpack vs Osprey Porter 46 Carry On Backpack

The main difference between the Osprey Siskin 8 Hydration Backpack and the Osprey Porter 46 Carry On Backpack is that the Siskin 8 Hydration Backpack has Internal Compartments (Internal scratch-free slash pocket) while the Porter 46 Carry On Backpack does not.

Osprey Siskin 8 Hydration Backpack Front View
Front Osprey Porter 46 Carry On Backpack Back View
Specs Brand Osprey Osprey
Name Siskin 8 Hydration Backpack Porter 46 Carry On Backpack
Category Hydration Carry On
Sub Category Outdoor Travel
Capacity (L) 8L 46L
Dimensions (in) 18.5 x 8.5 x 6.9 21.5 x 14 x 9
Weight (lb) 1.2 3.3
Fabric 900x600D Polyester Recycled 500D Nylon Packcloth PFC Free DWR
Color 3 colors and patterns 5 colors and patterns
Warranty Osprey Lifetime Warranty Osprey Lifetime Warranty
Release Date December 5, 2018 April 22, 2017
Rating 4.8 4.8
Price Under $100 Under $150
General Features Shoulder Straps Adjustable shoulder straps Padded shoulder straps
Sternum / Chest Straps Adjustable sternum strap with magnetic valve Sternum strap with whistle buckle
Hip Belt / Waist Strap Adjustable hip belt
Main Compartment Access Full front zipped access Clamshell
External Pockets Top zipped pocket 1 top, front, bottom and back zipped pocket
Internal Compartments Internal scratch-free slash pocket
Side Pockets Dual internal side pockets
Water Bottle No No
Handles Top grab handle Padded top and side handles
Loops and Attachments LidLock helmet attachment, ;oop for blinky light attachment Reinforced cord loops
Business & School Features Laptop Sleeve Lockable, padded laptop compartment fits up to 15"
Organizer Pocket Front utility pocket with organizer
Travel Features Carry-on Size Compliant 44.5 linear inches carry on size compliant
Compression Straps External compression straps Internal and external compression straps
Stowable Straps Stowaway harness and hip belt
Luggage Straps / Trolley Sleeve Padded luggage handle pass-through
Hiking / Backpacking Features Back Panel Mesh-covered extra deep ridged foam with center air channel
Reflective Safety Strips Reflective accent
Anti Theft Features Lockable Zippers Lockable zipper head
Gym / Sports Features Shoe Compartment Bottom shoe compartment
Hydration Features Bladder Size Includes Osprey Hydraulics LT 2.5L reservoir by Hydrapak
Hydration Compatible Yes

You're currently comparing the Siskin 8 Hydration Backpack by Osprey against the Porter 46 Carry On Backpack by Osprey .


Osprey 's Siskin 8 Hydration Backpack is a Hydration backpack with Outdoor features while Osprey 's Porter 46 Carry On Backpack is a Carry On backpack with Travel 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 Porter 46 Carry On Backpack's capacity is 46L with a size of 21.5 x 14 x 9 inches. Constructed from Recycled 500D Nylon Packcloth PFC Free DWR it weighs 3.3 pounds and is available in 5 colors and patterns.