Convertible car seats also known as 3-in-1 car seats are designed to fit your growing child. These can take your child through three different stages. It starts out as a rear-facing infant car seat with an upper limit of 40 pounds, converts to a forward-facing car seat that will keep your child harness up to 65 lbs and later transitions to a belt-positioning booster seat to use until 100lbs. BabyStyel.ca offers a neat selection of convertible car seats from most popular brands in Canada - Eddie Bauer, Graco, Safety 1st. Choose yours now! FREE delivery to your door.