Under Armour Undeniable Sackpack vs Under Armour Loudon Backpack

The main difference between the Under Armour Undeniable Sackpack and the Under Armour Loudon Backpack is that the Undeniable Sackpack has Sternum / Chest Straps (Custom UA sternum clip) while the Loudon Backpack does not.

Under Armour Undeniable Sackpack Front View
Under Armour Loudon Backpack
Specs Brand Under Armour Under Armour
Name Undeniable Sackpack Loudon Backpack
Category Drawstring Mens
Sub Category Gym Everyday
Capacity (L) 25L 21L
Dimensions (in) 19 x 15 x 2 11.8 x 5 x 17.7
Weight (lb) 0.5 0.9
Fabric 100% Polyester 100% Polyester
Color 14+ colors and patterns 30+ colors and patterns
Warranty Under Armour 60 Days Return Policy Under Armour 60 Days Return Policy
Release Date January 24, 2015 October 19, 2018
Rating 4.8 4.7
Price Under $50 Under $50
General Features Shoulder Straps Drawcord closure doubles as shoulder straps Adjustable HeatGear shoulder straps
Sternum / Chest Straps Custom UA sternum clip
Water Proof / Water Resistant UA Storm technology water repellant finish
Main Compartment Access Drawstring access Normal zipped access
External Pockets 1 zipped front pocket and side pocket 1 zipped front pocket
Side Pockets Side pocket can fit water bottle
Water Bottle Yes 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 Undeniable Sackpack by Under Armour against the Loudon Backpack by Under Armour .


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

The Under Armour Undeniable Sackpack has a capacity of 25L (liters), weighs 0.5 pounds and it's dimensions in inches are 19 x 15 x 2. It's made of 100% Polyester and is available in 14+ colors and patterns in comparison the Under Armour Loudon Backpack's capacity is 21L with a size of 11.8 x 5 x 17.7 inches. Constructed from 100% Polyester it weighs 0.9 pounds and is available in 30+ colors and patterns .