If you feel like it’s a little rude to yell “Watch out!” when you’re running down the sidewalk and approaching a slow group of people, the gentle ring of a bicycle bell could be just as effective and slightly more polite. A product called Runbell takes those iconic little brass bells off the handlebars and puts them onto your fingers so you can courteously warn pedestrians on shared pathways as you approach, even when you’re on your own two feet.

Lightweight and frills-free, the bell is made of brass for optimal sound and comes slightly oversized with silicone inserts so you can make it fit just right. That way, the rings remain adjustable even for cold days when you’re wearing gloves. It weighs less than an ounce and features a striker that can be activated from any angle, though it’s loudest if you pull it straight back.

The Runbell was funded on Kickstarter and is now available for purchase in men’s and women’s versions for $25. It’s easy to imagine this in use not just by runners, but frustrated native New Yorkers and other city denizens who just want people to stop blocking sidewalks staring at their phones or gawking at the scenery.