Evenflo SafeMax Platinum All-in-One Convertible Car Seat If you want a car seat that truly grows with your child, the Evenflo SafeMax Platinum All-in-One Convertible Car Seat ($314) fits children from five to 120 pounds. It has a quick connector latch that makes installation simple, and an impact-absorbing headrest. Image Source: amazon.com Evenflo SafeMax Platinum All-in-One Convertible Car Seat $314 from amazon.com Buy Now