Nathan VaporAir Hydration Pack vs UltrAspire Alpha 4.0 Vest

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.

Nathan VaporAir Hydration Pack Back View
Ultraspire Alpha 4.0 Vest FRont View
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

You're currently comparing the VaporAir Hydration Pack by Nathan against the Alpha 4.0 Vest by UltrAspire .


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.