The main difference between the Osprey Siskin 8 Hydration Backpack and the Osprey Radial Bike Commute Backpack is that the Siskin 8 Hydration Backpack has Compression Straps (External compression straps) while the Radial Bike Commute Backpack does not.
Specs | Brand | Osprey | Osprey |
Name | Siskin 8 Hydration Backpack | Radial Bike Commute Backpack | |
Category | Hydration | Commuter | |
Sub Category | Outdoor | Everyday | |
Capacity (L) | 8L | 34L | |
Dimensions (in) | 18.5 x 8.5 x 6.9 | 20.49 x 13.79 x 11.82 | |
Weight (lb) | 1.2 | 3.3 | |
Fabric | 900x600D Polyester | 210D Nylon Dobby | |
Color | 3 colors and patterns | 3 colors and patterns | |
Warranty | Osprey Lifetime Warranty | Osprey Lifetime Warranty | |
Release Date | December 5, 2018 | July 31, 2019 | |
Rating | 4.8 | 4.6 | |
Price | Under $100 | Under $200 | |
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 | Webbing hipbelt | ||
Main Compartment Access | Full front zipped access | Normal zipped access | |
External Pockets | Top zipped pocket | Scratch-free zippered pocket and 2 side zipped pockets | |
Internal Compartments | Internal scratch-free slash pocket | Document sleeve and internal organization | |
Side Pockets | Side pockets can fit water bottle and other accessories | ||
Water Bottle | No | Yes | |
Handles | Top grab handle | Top grab handle | |
Loops and Attachments | LidLock helmet attachment, ;oop for blinky light attachment | LidLock helmet carry, blinker light attachment | |
Business & School Features | Laptop Sleeve | Padded laptop sleeve fits up to 15" | |
Organizer Pocket | Front organization pocket | ||
Travel Features | Compression Straps | External compression straps | |
Hiking / Backpacking Features | Back Panel | Mesh-covered extra deep ridged foam with center air channel | Airspeed back panel |
Rain Cover | Built-in raincover | ||
Ventilated Back | Mesh-covered die-cut foam for ventilation | ||
Reflective Safety Strips | Reflective accent | Reflective prints and zipper pulls | |
Gym / Sports Features | Laundry Pocket | Separate compartment for dirty clothes or shoes | |
Hydration Features | Bladder Size | Includes Osprey Hydraulics LT 2.5L reservoir by Hydrapak | |
Hydration Compatible | Yes |
Osprey 's Siskin 8 Hydration Backpack is a Hydration backpack with Outdoor features while Osprey 's Radial Bike Commute Backpack is a Commuter backpack with Everyday 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 Radial Bike Commute Backpack's capacity is 34L with a size of 20.49 x 13.79 x 11.82 inches. Constructed from 210D Nylon Dobby it weighs 3.3 pounds and is available in 3 colors and patterns.