These handy applications help prevent your right hand from becoming practically useless during those endless motorway journeys. Especially if you don't ride hundreds of kilometres every week, you may face the negative side-effects from clenching the throttle for hours on end.
It's a lot more pleasant when you can relax your hand now and then, without risking your throttle from turning back.
Use these accessories for motorway trips only; long, empty straights ahead on wide and well-maintained roads. Cruise control methods in general, but these aids in particular can hinder lightning-fast responses during unforeseen events in heavy traffic.