The main difference between the Nathan VaporAir Hydration Pack and the UltrAspire Alpha 4.0 Vest is that the VaporAir Hydration Pack has Sternum / Chest Straps (Adjustable chest straps) while the Alpha 4.0 Vest does not.
Specs | Brand | Nathan | UltrAspire |
Name | VaporAir Hydration Pack | Alpha 4.0 Vest | |
Category | Sports | Sports | |
Sub Category | Running | Running | |
Capacity (L) | 5L | 6L | |
Dimensions (in) | 31-36 | ||
Weight (lb) | 0.9 | 0.6 | |
Fabric | Nylon/Polyester | Double layered 30D Fabric | |
Color | Black/Yellow | Emerald Blue Lime | |
Warranty | UltrAspire Warranty/Return Policy | ||
Release Date | November 17, 2009 | July 5, 2019 | |
Rating | 4.7 | 4.5 | |
Price | Under $125 | Under $125 | |
General Features | Shoulder Straps | Over-the-shoulder load lifters | Angled and curved shoulder straps |
Sternum / Chest Straps | Adjustable chest straps | ||
Zippers | Large zipper pulls | ||
Main Compartment Access | Side zipped access | Normal zipped access | |
External Pockets | 9 exterior pockets | Rapid access pockets, passage pocket and drawstring pocket | |
Water Bottle | Yes | Yes | |
Handles | Top grab handle | ||
Loops and Attachments | Elastic perimeter banding, rear external shockcord | ||
Hiking / Backpacking Features | Ergonomic | ErgoFit | |
Ventilated Back | Ultracool system | ||
Trekking Pole Holders | Trekking pole attachments | ||
Reflective Safety Strips | Reflective details | ||
Hydration Features | Bladder Size | Includes 2L bladder with quick-release valve | Holds 2L reservoir |
Hydration Compatible | Yes | Yes |
Nathan 's VaporAir Hydration Pack is a Sports backpack with Running features while UltrAspire 's Alpha 4.0 Vest is a Sports backpack with Running features.
The Nathan VaporAir Hydration Pack has a capacity of 5L (liters), weighs 0.9 pounds and it's dimensions in inches are . It's made of Nylon/Polyester and is available in Black/Yellow 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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