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

The main difference between the Osprey Porter 46 Carry On Backpack and the Osprey Siskin 8 Hydration Backpack is that the Porter 46 Carry On Backpack has Hip Belt / Waist Strap (Adjustable hip belt) while the Siskin 8 Hydration Backpack does not.

Front Osprey Porter 46 Carry On Backpack Back View
Osprey Siskin 8 Hydration Backpack Front View
Specs Brand Osprey Osprey
Name Porter 46 Carry On Backpack Siskin 8 Hydration Backpack
Category Carry On Hydration
Sub Category Travel Outdoor
Capacity (L) 46L 8L
Dimensions (in) 21.5 x 14 x 9 18.5 x 8.5 x 6.9
Weight (lb) 3.3 1.2
Fabric Recycled 500D Nylon Packcloth PFC Free DWR 900x600D Polyester
Color 5 colors and patterns 3 colors and patterns
Warranty Osprey Lifetime Warranty Osprey Lifetime Warranty
Release Date April 22, 2017 December 5, 2018
Rating 4.8 4.8
Price Under $150 Under $100
General Features Shoulder Straps Padded shoulder straps Adjustable shoulder straps
Sternum / Chest Straps Sternum strap with whistle buckle Adjustable sternum strap with magnetic valve
Hip Belt / Waist Strap Adjustable hip belt
Main Compartment Access Clamshell Full front zipped access
External Pockets 1 top, front, bottom and back zipped pocket Top zipped pocket
Internal Compartments Internal scratch-free slash pocket
Side Pockets Dual internal side pockets
Water Bottle No No
Handles Padded top and side handles Top grab handle
Loops and Attachments Reinforced cord loops LidLock helmet attachment, ;oop for blinky light attachment
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 Internal and external compression straps 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 Porter 46 Carry On Backpack by Osprey against the Siskin 8 Hydration Backpack by Osprey .


Osprey 's Porter 46 Carry On Backpack is a Carry On backpack with Travel features while Osprey 's Siskin 8 Hydration Backpack is a Hydration backpack with Outdoor features.

The Osprey Porter 46 Carry On Backpack has a capacity of 46L (liters), weighs 3.3 pounds and it's dimensions in inches are 21.5 x 14 x 9. It's made of Recycled 500D Nylon Packcloth PFC Free DWR and is available in 5 colors and patterns in comparison the Osprey Siskin 8 Hydration Backpack's capacity is 8L with a size of 18.5 x 8.5 x 6.9 inches. Constructed from 900x600D Polyester it weighs 1.2 pounds and is available in 3 colors and patterns.