“Those wheels are encased ... All of the brand’s rolling-luggage pieces feature the same qualities essential to a modern suitcase and come highly praised by travel experts.

The main feature of the G-RO bags are the two "axle-less" large-diameter wheels. Most roller luggage features either two or four small wheels on posts that jut out from the bottom of the bag.

Luggage didn’t even have wheels until the 1980s ... I’ve coveted the unassuming black roller bags I see beside pilots and trailing behind connection-bound flight attendants—a real insider ...