Under Armour Loudon Backpack vs Under Armour Undeniable Sackpack 2.0

The main difference between the Under Armour Loudon Backpack and the Under Armour Undeniable Sackpack 2.0 is that the Loudon Backpack has Water Proof / Water Resistant (UA Storm technology water repellant finish) while the Undeniable Sackpack 2.0 does not.

Under Armour Loudon Backpack
Under Armour Undeniable Sackpack 2.0 Front View
Specs Brand Under Armour Under Armour
Name Loudon Backpack Undeniable Sackpack 2.0
Category Mens Drawstring
Sub Category Everyday Gym
Capacity (L) 21L 25L
Dimensions (in) 11.8 x 5 x 17.7 19 x 15 x 2
Weight (lb) 0.9 0.5
Fabric 100% Polyester 100% Polyester
Color 30+ colors and patterns 15+ colors and patterns
Warranty Under Armour 60 Days Return Policy Under Armour 60 Days Return Policy
Release Date October 19, 2018
Rating 4.7 4.8
Price Under $50 Under $25
General Features Shoulder Straps Adjustable HeatGear shoulder straps Drawcord closure doubles as shoulder straps
Sternum / Chest Straps Custom UA sternum clip
Water Proof / Water Resistant UA Storm technology water repellant finish
Main Compartment Access Normal zipped access Drawstring access
External Pockets 1 zipped front pocket 2 zipped front pockets
Water Bottle No No
Handles Top grab handle
Loops and Attachments D ring on front panel
Lightweight Yes
Business & School Features Laptop Sleeve Soft-lined laptop sleeve holds up to 15"
Organizer Pocket Front utility pocket with organizer Front utility pocket with organizer

You're currently comparing the Loudon Backpack by Under Armour against the Undeniable Sackpack 2.0 by Under Armour .


Under Armour 's Loudon Backpack is a Mens backpack with Everyday features while Under Armour 's Undeniable Sackpack 2.0 is a Drawstring backpack with Gym features.

The Under Armour Loudon Backpack has a capacity of 21L (liters), weighs 0.9 pounds and it's dimensions in inches are 11.8 x 5 x 17.7. It's made of 100% Polyester and is available in 30+ colors and patterns in comparison the Under Armour Undeniable Sackpack 2.0's capacity is 25L with a size of 19 x 15 x 2 inches. Constructed from 100% Polyester it weighs 0.5 pounds and is available in 15+ colors and patterns .