The Sit N Stand Ultra stroller offers multiple riding positions, allowing kids to sit or remain along the ride, or use an infant car seat within both the front and rear facing seats. The Sit N Stand Extremely stroller may accept one or 2 baby car seats, (offered separately) all Baby Trend infant car seats, and choose designs from other brands to create a journey program. Please refer to our infant car seat compatibility chart for more information: http://www.babytrend.com/faqs_carseatcompatibility.html.Folds compactly for easy storage and travel, large storage space basket, and has a foot activated braking system. The unique rear facing seat allows your more mature child, (up to 50 lbs.) to ride or they can easily forward face to stand on the sturdy stand on platform. The child tray conveniently can swing away allowing even older children simple access to the front seat, the mum or dad holder has covered storage with cupholders, with a 2nd child cupholder for your more mature standing or rear facing baby.