MEC Outpost 40L Travel Pack vs. haize project Clamshell 38

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

MEC Outpost 40L Travel Pack

by MEC
Capacity40 L
Weight1.4 kg
Dimensions50×35×23 cm
Airline fit71%
Price$200

Feature by feature

MEC Outpost 40L Travel PackFeaturehaize project Clamshell 38
Storage
4 Compression 4
None Expanded Capacity None
1 Opening 1
top Passport top
Y Passthrough N
Carry
hideable Backpack Y
removable Hip Belt N
removable Sternum Strap removable
Inside
15in Laptop 15in
4 Main Compartments 4
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
1, side Water Bottle Holder 1, side
N Water Resistant Y
Material
PU coated 300-denier ripstop1680D RPET polyurethane

haize project Clamshell 38

Front facing view of the haize project Clamshell 38
Capacity38 L
Weight1.6 kg
Dimensions55×35×20 cm
Airline fit86%
Price$380

Key differences between the MEC Outpost 40L Travel Pack and haize project Clamshell 38

Both have: compression straps, passport pocket, sternum strap, laptop sleeve, water bottle pockets.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 128 accept both. 7 accept only the MEC Outpost 40L Travel Pack, and 34 accept only the haize project Clamshell 38.

Only the MEC Outpost 40L Travel Pack fits

Etihad Airways, Oman Air, Qatar Airways, Royal Jordanian, Scoot, Tiger Airways, WestJet.

Only the haize project Clamshell 38 fits

Air Baltic, Air China, Air Malta, Air Serbia, Air Seychelles, Asiana Airlines, ATA Airlines, Blue Air, Bulgaria Air, China Eastern, Emirates Airlines, Enter Air, flybe, Icelandair, InselAir, Juneyao Airlines, Luxair, Meridiana Fly, Nordwind Airlines, Pakistan International, Royal Brunei Airlines, Ryanair, S7, Shandong Airlines, Shenzhen Airlines, Sun Express, TAP Air Portugal, TAROM, Tianjin Airlines (A320 & E190), TUI, Ukraine International, VIM Airlines (Closed), Volotea, Xiamen.

MEC Outpost 40L Travel Pack vs. haize project Clamshell 38: which should you pack?

The MEC Outpost 40L Travel Pack carries 2L more than the haize project Clamshell 38 (40L vs. 38L), while the MEC Outpost 40L Travel Pack is the lighter pack at 1.4kg (vs. 1.6kg). For carry-on flexibility, the haize project Clamshell 38 fits 86% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the MEC Outpost 40L Travel Pack; if you want to travel lighter, the MEC Outpost 40L Travel Pack is the better call.