Mountain Buggy Duet Twin Travel Adaptor A travel adaptor converts your duet™ buggy into a travel system by allowing you to quickly & easily attach the protect™ infant car seat to the frame of your buggy. Move from the car, to the buggy with a simple click - all without waking the baby. Key Features: -easy attachment to the buggy frame. -safety tested and certified to global standards. -for use on the following Mountain Buggy® stroller duet™. -compatible with Mountain Buggy® protect™ infant car seat  and many other leading car seat brands.