One of the first things to look at when choosing a car seat is if it will fit your child. Make sure it is for the age of the child and see what the adjustments are for growth. If you only want to purchase one car seat ever for the child, then get one that will change into a booster seat with a seat belt. This will take you to the ages of an older kid. The size of the seat should be considered to see if it fits in your vehicle comfortably. The other features are comfort qualities such as the various positions and removable parts.