Each Carrie Rover Stroller Chair (stroller-like chair) comes complete with a Carrie Seat with Headrest, Shoes, and Tray. Carrie Seats can be easily removed for use as a positioning chair at home or school or in the car. To make the Carrie Seat positioning chair mobile, the seat is easily set into the Rover base and secured with one "click". The tilt-in-space angle can be adjusted between fully upright to 20 degree backwards. The Rover features pneumatic tires and a heavy duty frame for all-terrain travel. It folds in a snap, small enough to pop in the trunk of most cars.The Carrie Rover has been dynamically crash-tested for use on school buses with standard forward-facing tie-down systems (Q'Straint for example).