[SusanMae]

The Chicco KeyFit is a pretty narrow seat if you need to replace the infant seat.

You might want to see if you can find a Sunshine Kids Radian...as it also is pretty narrow.

How much does your 4 yr old weigh? In 3 across situations it's typically easier to fit 3 harnessed seats rather than 2 harnessed seats and a booster. With a child as young as 4---you're risking them accidently unbuckleing one of the harnessed seats. Also 4 and 40 pounds is the MINIMUM for putting a child in a booster. We like to see young children in a harnessed seat until 5-6 yrs so that their vertebra are fully fused and for them to gain the maturity necessary to safely ride in a 3 pt belt.

Susan

	Infant Car Seats Infant-only rear-facing seats are for babies up to about 22 to 30 pounds, depending on the specific car seat. You will need a new seat when your child gets bigger. Infant-only seats have handles that allow you to move the seat from the car to the house or other locations. Some have a base that you can leave installed in the car, so you can just click the car seat into place each time you use it.

	Booster Seat A booster seat raises your child up so that the car's lap and shoulder belts fit correctly. The lap belt should fall across the upper thighs. The shoulder belt should go across the middle of the shoulder and chest. A booster seat is used for older children up to about 80 pounds. Some states have passed laws requiring booster seats for children up to age 8 or 80 pounds. Check your state's law.

	Chicco - Click for more info Chicco makes car seats that are tested for safety and comfort. Italian-made Chicco is sold the world over to discerning parents everywhere, mainly because they are thorough with their design but each children’s product they sell is simple to use and stylish. All of Chicco’s car seats have certain universal elements: they’re lightweight, they are easy to install or use, each have the extra perks like canopies or liquid levelers for added convenience. Take a look and you’ll find an up-and-coming competitor for some of the best car seats on the market.

	Chicco Key Fit - Click for more info The new and improved Chicco KeyFit infant car seat (dubbed the Chicco KeyFit 30 thanks to its enhanced-to-30 lbs harness) has the same great features of the original KeyFit, but with a higher harness weight capacity. It is recommended that a child stay in a rear facing car seat for at least the first year of his or her life, and this infant seat from Chicco assures that your child will.

	Sunshine Kids - Click for more info Makers of a number of accessories geared towards making parents lives easier, Sunshine Kids has recently embarked in a new direction. In 2005 they unveiled their first car seat, the Radian. Their years of experience working in children's products focusued on child comfort and parent convenience shine through in this unique convertible car seat. The Radian is packed with safety features and is the first ever folding convertible car seat appealing to parents who car pool or travel often.

	Sunshine Kids Radian 80 or 65 - Click for more info If "the Sunshine Kid's Radian 80 convertible car seat is (probably) the only car seat you will ever need," the "probably" part of this statement comes into play when you directly compare the Radian 80 with the Britax Regent. While the Radian 80 has a very high weight capacity, the seat width is only 10" vs. the Regent's 14" seat. The Britax Regent may be a bit wider, but it is very bulky, is only forward facing, and does not fold like the Radian 80. Because the Radian 80 is so narrow, you can potentially put three of them side by side in the back seat. Three Regents side by side? Impossible.