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.
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 |
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.
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