Nathan Intensity Womens Hydration Backpack vs UltrAspire Alpha 4.0 Vest

The main difference between the Nathan Intensity Womens Hydration Backpack and the UltrAspire Alpha 4.0 Vest is that the Intensity Womens Hydration Backpack has Sternum / Chest Straps (Adjustable chest straps) while the Alpha 4.0 Vest does not.

Nathan Intensity Womens Hydration Backpack Front View
Ultraspire Alpha 4.0 Vest FRont View
Specs Brand Nathan UltrAspire
Name Intensity Womens Hydration Backpack Alpha 4.0 Vest
Category Sports Sports
Sub Category Running Running
Capacity (L) 4.4L 6L
Dimensions (in) 13 x 7 x 3 31-36
Weight (lb) 0.9 0.6
Fabric Nylon / Polyester Double layered 30D Fabric
Color Very Berry Emerald Blue Lime
Warranty UltrAspire Warranty/Return Policy
Release Date March 11, 2021 July 5, 2019
Rating 4.6 4.5
Price Under $100 Under $125
General Features Shoulder Straps Breathable wall mesh shoulder straps Angled and curved shoulder straps
Sternum / Chest Straps Adjustable chest straps
Zippers Large zipper pulls
Main Compartment Access Normal zipped access
External Pockets Front zipped phone pocket and bottle pocket Rapid access pockets, passage pocket and drawstring pocket
Internal Compartments Internal rear stash pocket and key ring clip
Water Bottle Yes Yes
Handles Top grab handle Top grab handle
Loops and Attachments Patented 3-way propulsion harness™
Hiking / Backpacking Features Ergonomic ErgoFit
Ventilated Back Ultracool system
Trekking Pole Holders Trekking pole attachments
Reflective Safety Strips Reflective trims
Hydration Features Bladder Size Includes 2L water bladder with bite valve Holds 2L reservoir
Hydration Compatible Yes Yes
Other Features Other Features Bounce-free ride for your run or hike, designed specifically to fit the female form

You're currently comparing the Intensity Womens Hydration Backpack by Nathan against the Alpha 4.0 Vest by UltrAspire .


Nathan 's Intensity Womens Hydration Backpack is a Sports backpack with Running features while UltrAspire 's Alpha 4.0 Vest is a Sports backpack with Running features.

The Nathan Intensity Womens Hydration Backpack has a capacity of 4.4L (liters), weighs 0.9 pounds and it's dimensions in inches are 13 x 7 x 3. It's made of Nylon / Polyester and is available in Very Berry in comparison the UltrAspire Alpha 4.0 Vest's capacity is 6L with a size of 31-36 inches. Constructed from Double layered 30D Fabric it weighs 0.6 pounds and is available in Emerald Blue Lime.