Is that... a $40 luggage strap?

Some bag shapes and contents/slick material have a propensity for swinging around the handle and falling off, especially with a 2 wheeler and bumpy ground.
I keep a long gear tie in my travel backpack to help tie my backpack handle through arm of the roller handle even though most of my travel bags have a sleeve https://niteize.com/gear-tie-reusable-rubber-twist-tie because seeing my bag accelerate towards the pavement is never a good feeling.
I'd probably also use it if I wanted to wheel two similar sized spinners back to back over mostly flat ground since my hand isn't quite large enough to keep both bags together by the handles. Just a thought for those who travel with others and share being the luggage person or are more maximalist packers.