KS Ultralight Tao vs. Bellroy Venture Duffle 55L

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

KS Ultralight Tao

Front facing view of the KS Ultralight Tao
Capacity35 L
Weight0.3 kg
Dimensions71×30×18 cm
Airline fit1%
Price$150

Feature by feature

KS Ultralight TaoFeatureBellroy Venture Duffle 55L
Storage
N Compression N
None Expanded Capacity None
0 Opening 0
top Passport side
N Passthrough N
Carry
Y Backpack N
removable Hip Belt N
removable Sternum Strap N
Inside
N Laptop N
2 Main Compartments 2
N Organizer N
Outside
× Hard Shell ×
N Rain-fly N
N Water Bottle Holder N
Y Water Resistant Y
Material
X-pac VX 07YKK "waterproof zip"Baida Nylon 75% Recycled Nylon, 15% Recycled Polyester, 5% Other materials, 5% Nylon

Bellroy Venture Duffle 55L

Front facing view of the Bellroy Venture Duffle 55L
Capacity55 L
Weight0.9 kg
Dimensions60×37×32 cm
Airline fit1%
Price$230

Key differences between the KS Ultralight Tao and Bellroy Venture Duffle 55L

Both have: water resistant.

Which airlines take each bag as a carry-on

We checked both bags against the carry-on size limits of 189 airlines. 2 accept both. Every airline that takes one takes the other.

KS Ultralight Tao vs. Bellroy Venture Duffle 55L: which should you pack?

The Bellroy Venture Duffle 55L carries 20L more than the KS Ultralight Tao (35L vs. 55L), while the KS Ultralight Tao is the lighter pack at 0.3kg (vs. 0.9kg). For carry-on flexibility, the KS Ultralight Tao fits 1% of the airlines we track — the higher of the two. If you prioritise packing volume, choose the Bellroy Venture Duffle 55L; if you want to travel lighter, the KS Ultralight Tao is the better call.