Exped Serac 25 vs. Kathmandu Dash 20L Lightweight Backpack

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

Exped Serac 25

Front facing view of the Exped Serac 25
Capacity25 L
Weight0.765 kg
Dimensions55×25×21 cm
Airline fit69%
Price$200

Feature by feature

Exped Serac 25FeatureKathmandu Dash 20L Lightweight Backpack
Storage
N Compression N
None Expanded Capacity None
3 Opening 3
N Passport N
N Passthrough N
Carry
Y Backpack Y
removable Hip Belt Y
Y Sternum Strap Y
Inside
N Laptop N
1 Main Compartments 1
N Organizer N
Outside
× Hard Shell ×
N Rain-fly optional
N Water Bottle Holder 1
Y Water Resistant N
Material
420 D ripstop nylon, TPU film laminate, >10'000 mm water column210 Nylon HT Rip Stop Cordura™, 210 Polyester Oxford

Kathmandu Dash 20L Lightweight Backpack

Front facing view of the Kathmandu Dash 20L Lightweight Backpack
Capacity20 L
Weight0.44 kg
Dimensions46×25×22 cm
Airline fit75%
Price$100

Key differences between the Exped Serac 25 and Kathmandu Dash 20L Lightweight Backpack

Both have: backpack straps, sternum strap.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 131 accept both. 0 accept only the Exped Serac 25, and 10 accept only the Kathmandu Dash 20L Lightweight Backpack.

Only the Kathmandu Dash 20L Lightweight Backpack fits

Etihad Airways, Oman Air, Qatar Airways, Ravn Alaska, Regional Express, Royal Jordanian, Scoot, Tiger Airways, Virgin Australia, WestJet.

Exped Serac 25 vs. Kathmandu Dash 20L Lightweight Backpack: which should you pack?

The Exped Serac 25 carries 5L more than the Kathmandu Dash 20L Lightweight Backpack (25L vs. 20L), while the Kathmandu Dash 20L Lightweight Backpack is the lighter pack at 0.44kg (vs. 0.765kg). For carry-on flexibility, the Kathmandu Dash 20L Lightweight Backpack fits 75% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Exped Serac 25; if you want to travel lighter, the Kathmandu Dash 20L Lightweight Backpack is the better call.