Bellroy Classic Backpack Plus vs. STM Prime

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

Bellroy Classic Backpack Plus

Front facing view of the Bellroy Classic Backpack Plus
Capacity22 L
Weight1 kg
Dimensions52×30×21 cm
Airline fit71%
Price$179

Feature by feature

Bellroy Classic Backpack PlusFeatureSTM Prime
Storage
N Compression N
None Expanded Capacity None
4 Opening 0
Y Passport top
N Passthrough N
Carry
Y Backpack Y
N Hip Belt N
N Sternum Strap Y
Inside
15in Laptop 13in
1 Main Compartments 2
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder 2, side
Y Water Resistant Y
Material
Venture-weave polyester and leatherPolyester

STM Prime

Front facing view of the STM Prime
Capacity15 L
Weight0.7 kg
Dimensions42×26×13 cm
Airline fit96%
Price$80

Key differences between the Bellroy Classic Backpack Plus and STM Prime

Both have: backpack straps, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 134 accept both. 0 accept only the Bellroy Classic Backpack Plus, and 47 accept only the STM Prime.

Only the STM Prime fits

Air Baltic, Air China, Air Malta, Air Niugini, Air Serbia, Air Seychelles, Air Tahiti, American Eagle, Asiana Airlines, ATA Airlines, Belavia, Blue Air, Bulgaria Air, China Eastern, easyJet, Emirates Airlines, Enter Air, Etihad Airways, flybe, Great Lakes Airlines, Gulf Air, Icelandair, InselAir, Juneyao Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Oman Air, Qatar Airways, Ravn Alaska, Regional Express, Royal Brunei Airlines, Royal Jordanian, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Virgin Australia, Volotea, Xiamen.

The Bellroy Classic Backpack Plus and STM Prime are both popular carry-on backpack choices on today's market. They differ, however, in some notable areas. The Bellroy Classic Backpack Plus is a relatively larger option with a taller and wider build, measuring 21 inches tall and 30 inches wide as opposed to the STM Prime's 42 inches tall and 26 inches wide dimensions. Its depth, at 52” is cavernously greater than the Prime's 13 inches. The backpack's greater build also reflects in its weight and capacity. Weighing at 1 pound, the Classic Backpack Plus is heftier compared to the STM Prime’s lighter 0.7 pounds, and it offers a substantial 22 liters of capacity compared to the Prime's modest 15 liters.

The Bellroy Classic Backpack Plus's dimension and capacity make it an excellent choice for those who often find themselves needing to carry many items at a time. However, it should be noted that the size and weight might make it a bit of a hassle for petite individuals. Additionally, its compatibility rests at 65% of airlines, which means there's a 35% chance it might not be a suitable carry-on for a chosen flight. Despite this, reviews testify to its high-quality Venture-weave polyester and leather build and its excellent organizational features. The laptop compartment can comfortably accommodate a 15-inch laptop inside.

The STM Prime, on the other hand, proves to be a lighter and more compact solution for travel. It rocks a full Polyester construct, so if you're someone who prefers an all-fabric backpack, this is definitely worth considering. Its compatibility with 100% of airlines also makes it a safer bet for seamless travel. The STM Prime's laptop compartment is sized for a 13-inch laptop, which while being not as spacious as the Classic Backpack Plus's compartment, still works well for most laptop sizes commonly in use.

In conclusion, both the Bellroy Classic Backpack Plus and the STM Prime offer unique strengths. The former, with its superior capacity and size, suggests a great option for those needing to carry a good deal of items, while the latter offers the convenience of a compact, lightweight, and universally airline-compatible backpack. Depending on your needs and preferences, both are exceptional carry-on backpacks that warrant consideration.