Amazon.com : Twin Stroller Connector for Baby Universal Fits Umbrella Strollers Babyzen YOYO Yoya Etc.. Turns Two Single Strollers into a Double Stroller : Baby
YOYO connect double stroller – BABYZEN
BABYZEN™ YOYO connect (turns YoYo into a double Stroller) – JadaBug's Kids Boutique
BabyZen YoYo Connect Frame – Tadpole
Babyzen YoYo² Twin Setup with Connectors (Side by Side) - TinyExplorers
Twins Stroller from Birth | BABYZEN™ stroller YOYO connect
Babyzen Yoyo Double Stroller Bundle - Taupe | Black