STM Haven vs. Mountainsmith Divide

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

STM Haven

by Stm
Front facing view of the STM Haven
Capacity20 L
Weight0.9 kg
Dimensions47×28×13 cm
Airline fit93%
Price$100

Feature by feature

STM HavenFeatureMountainsmith Divide
Storage
N Compression N
None Expanded Capacity None
4 Opening 4
N Passport front
N Passthrough N
Carry
Y Backpack Y
N Hip Belt removable
N Sternum Strap N
Inside
15in Laptop 15in
5 Main Compartments 4
Y Organizer Y
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder 2, side
Y Water Resistant Y
Material
PolyesterTC 20s 2x2 Waxed Canvas PU 210d Recycled Nylon SD Oxford PU

Mountainsmith Divide

Front facing view of the Mountainsmith Divide
Capacity16 L
Weight0.7 kg
Dimensions46×28×14 cm
Airline fit95%
Price$90

Key differences between the STM Haven and Mountainsmith Divide

Both have: backpack straps, laptop sleeve, built-in organizer, water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 176 accept both. 0 accept only the STM Haven, and 3 accept only the Mountainsmith Divide.

Only the Mountainsmith Divide fits

American Eagle, easyJet, Ravn Alaska.

STM Haven vs. Mountainsmith Divide: which should you pack?

The STM Haven carries 4L more than the Mountainsmith Divide (20L vs. 16L), while the Mountainsmith Divide is the lighter pack at 0.7kg (vs. 0.9kg). For carry-on flexibility, the Mountainsmith Divide fits 95% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the STM Haven; if you want to travel lighter, the Mountainsmith Divide is the better call.