Under Armour Undeniable Sackpack vs Adidas Amplifier II Blocked Sackpack

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

Under Armour Undeniable Sackpack Front View
Adidas Amplifier Blocked Sackpack Front View
Specs Brand Under Armour Adidas
Name Undeniable Sackpack Amplifier II Blocked Sackpack
Category Drawstring Drawstring
Sub Category Gym Gym
Capacity (L) 25L
Dimensions (in) 19 x 15 x 2 14.5 x 3.75 x 19.25
Weight (lb) 0.5 0.8
Fabric 100% Polyester 100% Polyester
Color 14+ colors and patterns 5 colors and patterns
Warranty Under Armour 60 Days Return Policy Adidas Lifetime Warranty
Release Date January 24, 2015
Rating 4.8 4.5
Price Under $50 Under $25
General Features Shoulder Straps Drawcord closure doubles as shoulder straps Cinch webbing shoulder straps
Sternum / Chest Straps Custom UA sternum clip
Water Proof / Water Resistant Water resistant material
Main Compartment Access Drawstring access Drawstring access
External Pockets 1 zipped front pocket and side pocket 2 zipped front pockets
Side Pockets Side pocket can fit water bottle
Water Bottle Yes No
Loops and Attachments D-Ring on front panel
Lightweight Yes
Business & School Features Organizer Pocket Front utility pocket with organizer
Hiking / Backpacking Features Reflective Safety Strips Reflective details

You're currently comparing the Undeniable Sackpack by Under Armour against the Amplifier II Blocked Sackpack by Adidas .


Under Armour 's Undeniable Sackpack is a Drawstring backpack with Gym features while Adidas 's Amplifier II Blocked Sackpack is a Drawstring backpack with Gym 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 Adidas Amplifier II Blocked Sackpack's capacity is with a size of 14.5 x 3.75 x 19.25 inches. Constructed from 100% Polyester it weighs 0.8 pounds and is available in 5 colors and patterns .