Under Armour Flex Sling Bag vs Under Armour Project Rock Backpack

The main difference between the Under Armour Flex Sling Bag and the Under Armour Project Rock Backpack is that the Flex Sling Bag has Lightweight (Yes) while the Project Rock Backpack does not.

Under Armour Flex Sling Bag Front View
Under Armour Project Rock Backpack Front View
Specs Brand Under Armour Under Armour
Name Flex Sling Bag Project Rock Backpack
Category Sling Laptop
Sub Category Mens Travel
Capacity (L) 15L 28.5L
Dimensions (in) 10.9 x 4.3 x 17.3 11 x 7.5 x 19
Weight (lb) 0.7 2.5
Fabric 100% Polyester 100% Polyester
Color 2 colors and patterns Graphite/Black
Warranty Under Armour 60 Days Return Policy Under Armour 60 Days Return Policy
Release Date ‎May 7, 2019
Rating 4.2 4.9
Price Under $50 Under $100
General Features Shoulder Straps Adjustable cross-body strap Adjustable padded HeatGear® shoulder straps
Sternum / Chest Straps Adjustable sternum strap
Water Proof / Water Resistant UA Storm technology water resistant finish
Main Compartment Access Top access with cinch closure Normal zipped access
External Pockets 1 front and 2 side pockets 3 front, 1 back and 3 side pockets
Side Pockets Side pockets can fit water bottle Side pockets can fit water bottle and other accessories
Water Bottle Yes Yes
Handles Top grab handle
Lightweight Yes
Business & School Features Laptop Sleeve TSA friendly laptop sleeve fits up to 15"
Tablet Sleeve Soft lined padded tablet sleeve
Travel Features Base / Bottom Tough, abrasion-resistant PU coated bottom panel
Gym / Sports Features Shoe Compartment Stretch shoe pocket on front panel with buckle closure fits pair of shoes

You're currently comparing the Flex Sling Bag by Under Armour against the Project Rock Backpack by Under Armour .


Under Armour 's Flex Sling Bag is a Sling backpack with Mens features while Under Armour 's Project Rock Backpack is a Laptop backpack with Travel features.

The Under Armour Flex Sling Bag has a capacity of 15L (liters), weighs 0.7 pounds and it's dimensions in inches are 10.9 x 4.3 x 17.3. It's made of 100% Polyester and is available in 2 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 .