Adidas Amplifier II Blocked Sackpack vs Under Armour Undeniable Sackpack

The main difference between the Adidas Amplifier II Blocked Sackpack and the Under Armour Undeniable Sackpack is that the Amplifier II Blocked Sackpack has Water Proof / Water Resistant (Water resistant material) while the Undeniable Sackpack does not.

Adidas Amplifier Blocked Sackpack Front View
Under Armour Undeniable Sackpack Front View
Specs Brand Adidas Under Armour
Name Amplifier II Blocked Sackpack Undeniable Sackpack
Category Drawstring Drawstring
Sub Category Gym Gym
Capacity (L) 25L
Dimensions (in) 14.5 x 3.75 x 19.25 19 x 15 x 2
Weight (lb) 0.8 0.5
Fabric 100% Polyester 100% Polyester
Color 5 colors and patterns 14+ colors and patterns
Warranty Adidas Lifetime Warranty Under Armour 60 Days Return Policy
Release Date January 24, 2015
Rating 4.5 4.8
Price Under $25 Under $50
General Features Shoulder Straps Cinch webbing shoulder straps Drawcord closure doubles as 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 2 zipped front pockets 1 zipped front pocket and side pocket
Side Pockets Side pocket can fit water bottle
Water Bottle No Yes
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 Amplifier II Blocked Sackpack by Adidas against the Undeniable Sackpack by Under Armour .


Adidas 's Amplifier II Blocked Sackpack is a Drawstring backpack with Gym features while Under Armour 's Undeniable Sackpack is a Drawstring backpack with Gym features.

The Adidas Amplifier II Blocked Sackpack has a capacity of (liters), weighs 0.8 pounds and it's dimensions in inches are 14.5 x 3.75 x 19.25. It's made of 100% Polyester and is available in 5 colors and patterns in comparison the Under Armour Undeniable Sackpack'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 14+ colors and patterns.