Single-to-Double Stroller Seat 2.0This is a replacement Stroller Seat for one included with the Single to Double Stroller or the 2nd Seat Kit. The Single to Double Stroller seat was updated with an easier to use harness in February 2024, and can be purchased as a replacement for a well loved seat or as an upgrade if you have an older model.

The Lock Latch was updated with a new hinge design in February 2024

This item includes our 3

Our Stroller Bassinet gets even better when bundled with the Bassinet Stand

This is an additional (or replacement) Mattress Pad Sheet for the one that's included with the Bassinet

The sit-or-stand Riding Board attaches to the back of your stroller

Pair our award-winning stroller with the infant car seat you choose — compatible with 40+ popular models

This is a replacement Stroller Seat and Child Bar for the seat and child bar included with the Single Stroller

Our award-winning Single-to-Double Stroller starts as a single and can be converted to a double if your family grows

The Single-to-Double Stroller seat was updated with an easier-to-use harness in February 2024

and was named to Babylist's Best Strollers of 2026

and confident eating

The Car Seat Adapter makes the Mockingbird stroller compatible with more than 40 of the most popular infant car seats - so you can easily go from vehicle to Stroller and back again