The Sit ‘n’ Stroll is a car seat, a stroller, and a booster seat that can be used when traveling by air. An innovative, comfortable and well designed all -in-one solution. Use with your Newborn or Toddler up to 40 pounds. It easily converts from car seat to stroller and back again and can be installed using your vehicle seat belt. In stroller mode, it has multiple handle heights, high density wheels and foot activated rear brakes with a suspension system that helps absorb movement making the ride smoother for your child.