20-Inch PP Carry-On Luggage for Cabin Baggage

Cabin size is not one number

Airlines do not share a cabin limit. The common reference is around 55 × 40 × 20 cm, while several carriers allow nearer 56 × 45 × 25 cm, and the measurement that counts includes wheels and handles — not just the shell.

This matters commercially: a case sold as cabin size that does not fit a sizer becomes a return. Before you order, tell us the airlines your market flies and the limit you want to meet, and we will confirm the external dimension of the model rather than quoting the shell size.

Why PP suits a cabin case

Cabin cases take more handling per trip than checked cases — overhead bins, tight aisles, being pulled by one wheel. A PP shell flexes under that treatment and returns to shape; ABS in the same situation tends to crack at the corner.

The trade-off is weight. A thin PP wall is light, but every gram counts against a cabin allowance, so the wheel and trolley assembly matters as much as the shell. Ask for the net weight of the finished case, not the shell.

What to fix in the spec before you quote

Five things decide whether a cabin case works in your market:

• External dimension including wheels, against your target airline
• Net weight of the finished case
• Wheel type — dual spinner wheels track better in an aisle than single wheels
• Lock — combination lock is standard, TSA lock available on request; confirm what your customs market expects
• Expandability — a zip expansion adds capacity but also adds depth, which can break a cabin limit

Selling cabin alone, or as part of a set

Cabin-only orders reorder faster and cost less per unit to try. Sets sell at a higher basket value but tie up more stock in the slower-moving large size.

A practical middle path: order the cabin as the hero, with a smaller number of mediums behind it, and add the large only when the cabin proves itself. Because the models are already in production, adding a size to a repeat order is not a new project.