This Doona stroller is the first completely built-in system of its kind, making it seamless to travel from the car to around town, making it ideal for the city! This innovative system transitions from car seat to stroller in minutes, has an adjustable handlebar, removable/washable covers, and a 5 point harness. This stroller combination is made for 4 to 35 lbs. and is suitable for FAA air travel. Parents think this stroller is a dream and only makes life easier! Please note, we do not guarantee compatibility.