Osprey Siskin 8 Hydration Backpack vs Hydro Flask 14L Down Shift Hydration Backpack

The main difference between the Osprey Siskin 8 Hydration Backpack and the Hydro Flask 14L Down Shift Hydration Backpack is that the Siskin 8 Hydration Backpack has Compression Straps (External compression straps) while the 14L Down Shift Hydration Backpack does not.

Osprey Siskin 8 Hydration Backpack Front View
Hydro Flask 14L Down Shift Hydration Backpack Front View
Specs Brand Osprey Hydro Flask
Name Siskin 8 Hydration Backpack 14L Down Shift Hydration Backpack
Category Hydration Hydration
Sub Category Outdoor Outdoor
Capacity (L) 8L 14L
Dimensions (in) 18.5 x 8.5 x 6.9 18 x 10 x 7
Weight (lb) 1.2 2.2
Fabric 900x600D Polyester
Color 3 colors and patterns 3 colors and patterns
Warranty Osprey Lifetime Warranty Hydro Flask Lifetime Warranty
Release Date December 5, 2018 January 9, 2020
Rating 4.8 4.9
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 integrated whistle
Hip Belt / Waist Strap Adjustable hip strap
Main Compartment Access Full front zipped access Normal zipped access
External Pockets Top zipped pocket Soft pocket for sunglasses or a phone
Internal Compartments Internal scratch-free slash pocket Insulated hydration sleeve
Water Bottle No No
Handles Top grab handle Top grab handle
Loops and Attachments LidLock helmet attachment, ;oop for blinky light attachment Helmet attachment loops, webbing loop for bike light attachment
Travel Features Compression Straps External compression straps
Hiking / Backpacking Features Back Panel Mesh-covered extra deep ridged foam with center air channel Padded back panel
Reflective Safety Strips Reflective accent
Hydration Features Bladder Size Includes Osprey Hydraulics LT 2.5L reservoir by Hydrapak HydraPak® IsoBound™ 2L Insulated Reservoir
Hydration Compatible Yes Yes
Other Features Other Features High-flow HydraPak® Blaster Bite Valve self-seals after each sip

You're currently comparing the Siskin 8 Hydration Backpack by Osprey against the 14L Down Shift Hydration Backpack by Hydro Flask .


Osprey 's Siskin 8 Hydration Backpack is a Hydration backpack with Outdoor features while Hydro Flask 's 14L Down Shift Hydration Backpack is a Hydration backpack with Outdoor 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 Hydro Flask 14L Down Shift Hydration Backpack's capacity is 14L with a size of 18 x 10 x 7 inches. Constructed from it weighs 2.2 pounds and is available in 3 colors and patterns.