Does the Peak Design Travel Backpack 45L fit KLM's cabin bag?

No. Too long by 1 cm. It's 56 cm top to bottom and KLM allows 55 cm. It's too big for KLM's personal item (16 cm too long).

Won't fit

Flying with
55 × 35 × 25 cm, 12 kg
Checking
56 × 33 × 23 cm, backpack
Units
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Side the bag fails onPart that sticks outSizer frame

Won't fit

Too long by 1 cm. It's 56 cm top to bottom and KLM allows 55 cm.

BagPeak Design Travel Backpack 45L
Cabin bagKLM
Length
56of 55 cm1 cm over
Width
33of 35 cm2 cm spare
Depth
23of 25 cm2 cm spare
Weight12 kg limit, shared

Empty it weighs 2 kg, leaving 10 kg for your things.

What you can do

  • Take a bag 55 cm tall or less. 3 bags we list fit.
  • Or check it in when you book. It's usually cheaper than paying at the gate.
  • Fits 4 other airlines, including Singapore Airlines and Frontier Airlines. See all

We haven't checked this bag's size against the brand yet.

KLM rules checked 2 Nov 2026. Source. Sizes include wheels and handles.

Side by side

Peak Design Travel Backpack 45L against KLM's limits. Bags can be turned, so the longest side is compared with the longest limit.

Cabin bag: 55 × 35 × 25 cm, 12 kg
SideBagLimitResult
Length56 cm55 cm1 cm over
Width33 cm35 cm2 cm spare
Depth23 cm25 cm2 cm spare
Personal item: 40 × 30 × 15 cm, 12 kg
SideBagLimitResult
Length56 cm40 cm16 cm over
Width33 cm30 cm3 cm over
Depth23 cm15 cm8 cm over

Empty it weighs 2 kg of the 12 kg limit.

KLM rules worth knowing

  • Cabin bag and personal item together must not exceed 12 kg.

Airlines where the Peak Design Travel Backpack 45L fits

Bags that fit KLM's cabin bag

Biggest first.

Good to know

What can I do if the Peak Design Travel Backpack 45L is too big for KLM?

Add a checked bag when you book, which is usually cheaper than paying at the gate, or bring a smaller cabin bag. The Peak Design Travel Backpack 45L does fit Singapore Airlines, Frontier Airlines and Southwest Airlines.

What is KLM's cabin bag size limit?

KLM's cabin bag limit is 55 × 35 × 25 cm, up to 12 kg shared across your cabin items.

Which other bags fit KLM?

CabinZero Classic 36L, WANDF Personal Item Duffel and Horizn Studios Gion Shoulder Bag fit with room to spare.