The Baby Jogger Double Car Seat Adaptor allows you to turn your Double stroller into a travel system by providing a place to securely attach your car seat to the stroller until your baby can sit in the upright seat. Positioned on a locking slide, the car Seat Adaptor can slide to the center of the stroller for an equal distribution of weight when only the car seat is in use. Designed to fit several popular car seats including those made by Peg Perego, Maxi Cosi, Chicco, Graco and Evenflo. Holds one car seat and only one double car seat adaptor can be attached at once. Legal Statements: This and all items from Baby Jogger are excluded from all promotions and discounts except where otherwise noted on product detail pages.