Under Armour Undeniable Sackpack vs Under Armour Project Rock Backpack

The main difference between the Under Armour Undeniable Sackpack and the Under Armour Project Rock Backpack is that the Undeniable Sackpack has Loops and Attachments (D-Ring on front panel ) while the Project Rock Backpack does not.

Under Armour Undeniable Sackpack Front View
Under Armour Project Rock Backpack Front View
Specs Brand Under Armour Under Armour
Name Undeniable Sackpack Project Rock Backpack
Category Drawstring Laptop
Sub Category Gym Travel
Capacity (L) 25L 28.5L
Dimensions (in) 19 x 15 x 2 11 x 7.5 x 19
Weight (lb) 0.5 2.5
Fabric 100% Polyester 100% Polyester
Color 14+ colors and patterns Graphite/Black
Warranty Under Armour 60 Days Return Policy Under Armour 60 Days Return Policy
Release Date January 24, 2015 ‎May 7, 2019
Rating 4.8 4.9
Price Under $50 Under $100
General Features Shoulder Straps Drawcord closure doubles as shoulder straps Adjustable padded HeatGear® shoulder straps
Sternum / Chest Straps Custom UA sternum clip Adjustable sternum strap
Water Proof / Water Resistant UA Storm technology water resistant finish
Main Compartment Access Drawstring access Normal zipped access
External Pockets 1 zipped front pocket and side pocket 3 front, 1 back and 3 side pockets
Side Pockets Side pocket can fit water bottle Side pockets can fit water bottle and other accessories
Water Bottle Yes Yes
Handles Top grab handle
Loops and Attachments D-Ring on front panel
Lightweight Yes
Business & School Features Laptop Sleeve TSA friendly laptop sleeve fits up to 15"
Tablet Sleeve Soft lined padded tablet sleeve
Organizer Pocket Front utility pocket with organizer
Travel Features Base / Bottom Tough, abrasion-resistant PU coated bottom panel

You're currently comparing the Undeniable Sackpack by Under Armour against the Project Rock Backpack by Under Armour .


Under Armour 's Undeniable Sackpack is a Drawstring backpack with Gym features while Under Armour 's Project Rock Backpack is a Laptop backpack with Travel 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 Project Rock Backpack's capacity is 28.5L with a size of 11 x 7.5 x 19 inches. Constructed from 100% Polyester it weighs 2.5 pounds and is available in Graphite/Black .