Seeing as kid's now have to be in car seats until 7 years old most car seats are either birth to 4 yrs or or 6mths to 4 years and they now make 6mths to 7 years or have the old booster seats but they now have to have harnesses so you would still have to buy 2 eventually so we hired a capsule and brought a 6mths to 7 years car seat that way we only had to pay $80 for hire and then the cost of one car seat insted of 2 car seats and that one car seat will last until Ella is 7.