Amazon.com : Twin Stroller Connector for Baby Universal Fits Umbrella Strollers Babyzen YOYO Yoya Etc.. Turns Two Single Strollers into a Double Stroller : Baby
Amazon.com : Stroller Connectors for Babyzen YOYO2 YOYO+ Strollers,Turns Two Single Strollers into a Double Stroller : Baby
3pcs Coupler Bush insert into the strollers for babyzen yoyo baby yoya stroller connector adapter make YOYO into pram twins - AliExpress
Car Seat Adapter for Baby Strollers | BABYZEN™ YOYO²
Amazon.com : Stroller Connectors for Babyzen YOYO2 YOYO+ Strollers,Turns Two Single Strollers into a Double Stroller : Baby
Car Seat Adapter for YOYO Stroller | BABYZEN™ YOYO