The adapter enables the use of other branded infant car seats with CYBEX strollers. It turns your stroller into a travel system in seconds! This easy to use system attaches to the frame of the Cybex Ruby, Onyx, Topaz, or Callisto (all models 2009- up) to secure infant car seats like the Graco Snug Ride, Chicco Key Fit and many others. Now you have the option of taking a lightweight Cybex umbrella stroller and turning it into a travel system! The adapter will fold while on the stroller, and when not in use can be easily stored in the basket. It's small enough to even fit in a diaper bag or purse.