Cotopaxi Allpa 35L vs. Atom Pack "The Mo"

Two carry-on travel backpacks, compared spec for spec.

Cotopaxi Allpa 35L

Front facing view of the Cotopaxi Allpa 35L
Capacity35 L
Weight1.5 kg
Dimensions51×30×20 cm
Airline fit80%
Price$200

Feature by feature

Cotopaxi Allpa 35LFeatureAtom Pack "The Mo"
Storage
N Compression S
None Expanded Capacity None
4 Opening 2
Y Passport N
N Passthrough N
Carry
H Backpack S
R Hip Belt R
S Sternum Strap R
Inside
15 Laptop 0
3 Main Compartments 1
Y Organizer N
Outside
× Hard Shell ×
N Rain-fly N
0 Water Bottle Holder 2
Y Water Resistant Y
Material
1680D ballistic nylon panelingVX21 X-Pac fabric

Atom Pack "The Mo"

Front facing view of the Atom Pack "The Mo"
Capacity40 L
Weight0 kg
Dimensions91×84×74 cm
Airline fit18%
Price$245

The Cotopaxi Allpa 35L and The Atom Pack "The Mo" share an undeniable air of quality, but diverge significantly in their tangible properties and utilities. Both are constructed with priority for longevity - The Allpa of robust 1680D ballistic nylon, and The Mo boasts the sturdy yet lightweight VX21 X-Pac fabric.

The Allpa 35L is the more compact of the two, standing at 20 inches tall with a width and depth of 30 and 51 inches respectively. This manageable size results in a slight win in compatibility, fitting the size requirements of around 80% of airlines. While its internal size is modest, it balances with a laptop compartment that accommodates up to 15" devices. This is paired with echoing comments from reviewers, describing it as 'the perfect graduation gift for the budding world traveler' and particularly rewarding its intuitive internal organization.

On the other hand, The Mo from Atom Packs scales to 74 inches tall, significantly larger than its counterpart. Despite its impressive size and 40-liter capacity, its weight betrays expectation, weighing in at a startling 0 pounds. Its larger size appears to hamper its acceptance in places, however, with only 19% of airlines confirming its compatibility.

The comparison can be crystallized in the following points:

The Allpa 35L's smaller size and configuration seem tailor-made for city-hopping and short adventures, whilst The Mo's larger scale, unexpected lightness, and multiple lash points make it a serious contender for extended backpacking excursions, as attested by a reviewer who found it to be 'the comfiest and the lightest pack I’ve ever used on an overnight backpacking trip.' Essentially, the choice hangs on your destination - incursion into the wild, or immersion in civilization.