Convert your Mountain Buggy® cosmopolitan™ into a travel system with the universal car seat adaptor. Features: Move baby from car to buggy, and back again without disturbance Safety certified to global standards Compatible with Mountain Buggy® protect™ infant car seat and many other leading car seat brands such as phil&teds® alpha™, Maxi-Cosi Cabriofix, Pebble Plus, Mico, Cybex Aton, Cybex Aton 2, Cybex Aton Q, Chicco Keyfit 30, Nuna Pipa, Kiddy Evolution Pro