Allegiant Air (G4) Carry-On Bag Sizer

Check if your bag fits Allegiant Air cabin limits (56×36×25 cm, 11 kg) and under-seat personal item cage (45×36×20 cm).

Step 1 · Compare Screens to Scale

Pick two TV or monitor sizes. Stacking them from the same corner makes the true height and width gain immediately obvious.

Step 2 · Measure Suitcase Wheels Too

Measure your bag from floor to top handle including wheels. The green or red box shows if it slides inside metal gate sizers.

Step 3 · Leave 60 cm (24") Walkways

Enter your bedroom walls to verify whether doors open cleanly and at least 60 cm walking space remains on both sides.