From Bugaboo, this bumper bar features: The Bugaboo Butterfly bumper bar accessory provides extra comfort and some bonus security on your baby's journeys The bar attaches to the stroller's frame with just one click Your curious toddler can grab onto it as they explore the world Butterfly stroller is sold separately Compatible withBugaboo Butterfly (2022 model) & Bugaboo Butterfly (not Butterfly 2) Imported.