Britax Car Seat Travel Cart Model_ST-3 Balance Bike "Add this seat on to

"Add this seat on to your UPPAbaby Vista Stroller to turn it into a double

"A lightweight carrier that works for all seasons

"Displays your babies fetal heart rate on an LCD display with back light

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Britax Car Seat Travel Cart Model_ST-3 Balance Bike "Add this seat on toCondition: Gently Used "Traveling through airports with bulky car seats can be a challenge, but this device makes it so much easier! Simply attach your childs car seat to the frame, using the car seats latch connectors, and wheel it through the airport with ease. You can strap your child into the car seat as well, turning this into a convenient stroller alternative."