India, May 14 -- Your cabin suitcase may look perfectly sized yet still be taken away at the boarding gate. Recently, my brand-new carry-on was tagged for the luggage hold, and I watched it disappear with genuine sadness. The lesson was simple. A suitcase cover adds a layer of protection if your bag is removed from your sight. Carrying a separate laptop bag can also push you beyond the airline allowance. Choose a cabin trolley with a laptop compartment instead, and you are far less likely to be stopped.

Here are the reasons this happens, and eight smart suitcases worth adding to your travel list before your next airport run for a quicker boarding experience and an easier exit from the airport.

Even if your suitcase fits neatly into the ...