Cotopaxi Allpa 35L vs. A 35L Travel Backpack

The Cotopaxi Allpa 35L leads in the world of carry-on backpacks, pairing practicality with rugged durability. It's advantageous because it's built to last, being constructed of robust 1680D ballistic nylon paneling. This bag doesn't shy away from keeping your valuables safe either. It has a dedicated padded sleeve for a 15-inch laptop, making it a sturdy fortress against impact while on the move. Notably, it's compatible with 80% of airlines, meaning you'll seldom run into trouble upon checking-in.

In contrast, the A 35L Travel Backpack crafted by Standard Luggage Co. steps up in dimensions, giving you an extra 5 inches in both width and depth compared to the Cotopaxi Allpa 35L. It's constructed from similar material - 1680 denier high tenacity ballistic nylon, which also offers durability and strength. Its primary highlight is the larger laptop compartment, which can comfortably accommodate a 17-inch computer. However, it trails in terms of airline compatibility, being permissible only with 78% of airlines.

Now let's see how these two bags fare in a direct comparison:

• Dimensions: Cotopaxi Allpa 35L with 20x30x51 inches, while Standard's A 35L Travel Backpack has dimensions of 20x35x55 inches.
• Weight: Cotopaxi Allpa 35L is lighter at 1.5 pounds, compared to A 35L Travel Backpack which weighs 1.7 pounds.
• Capacity: Both bags offer a capacity of 35 liters.
• Airline compatibility: Cotopaxi Allpa 35L comes ahead with 80%, compared to Standard's A 35L Travel Backpack at 78%.
• Material: Both are made of ballistic nylon, 1680D for Cotopaxi Allpa and 1680 denier for Standard's A 35L.
• Laptop Compartment: Cotopaxi fittingly houses a 15-inch laptop, while Standard's can hold up to a 17-inch one.

Upon reviewing, the Cotopaxi Allpa 35L is celebrated for its internal organization and the cleverly integrated laptop compartment. Reviewers have noted it to be perfect for light and easy travelling, ideal for shorter term business trips, or even for budding world travellers. On the other hand, the A 35L Travel Backpack from Standard Luggage Co. brings with it an array of useful features like its expandable capacity from 35L to 45L, detachable laptop compartment and an ingenious layout of pockets, making it an enticing option for those allocating more room for souvenirs or extras from their adventures.

While either backpack caters to specific types of travel, both promise to cater to the demands of convenience, durability and style in their unique ways. Your choice between the two comes down to your precise requirements and personal preference for organisation, size, and versatility.