From Tavo Pet, this adapter features: Seamlessly connects the Dupree Carry-On Pet Car Seat to a Roscoe series Pet Stroller frame (each sold separately) With just a click, this adapter easily connects to the Roscoe pet stroller frame, creating a safe and sturdy connection for a smooth strolling experience The Dupree car seat's trolley sleeve securely slides down onto the adapter and can be removed from the stroller with just one hand Folds up with the stroller frame without needing to be removed Perfect for car, plane, and outdoor adventures with your furry friend Made with strong and supportive materials Dimensions: Open: 11 x 12.5 x 8.5 in Weight: 1 lb Imported.