This car seat adaptor attaches to the rear double kit position only it allows you to attach two car seats to your vibe or verve stroller or one car seat in the rear position while a toddler rides in the double kit on the front please note this is compatible with current version of vibe or verve only this car seat adaptor will not be compatible with previous versions of vibe or verve manufactured prior to 2014 features move car seat from car to stroller without disturbing baby while yo