Maxi-Cosi Kani 4-in-1 Infant Kids Convertible Car Seat, Rear-Facing, Forward-Facing, Booster, Slim 3-Across Fit, Magnetic Buckle, 5-Position Recline, Fits 5-100 lbs, 19-57 in, Caspian Caviar
$379.99
The Maxi-Cosi Kani 4-in-1 Convertible Car Seat is designed to be your child’s car seat from the first ride home from the hospital through the big kid booster stage. This all-in-one car seat has 4 modes: rear-facing car seat (5–40 lbs., 19″–40″), forward-facing car seat (30–65 lbs., 34.4″–49″), belt-positioning booster seat (40–100 lbs., 43.4″–52″), and backless booster seat (40–100 lbs., 43.4″–57″). Parents love Kani’s slim car seat design, which fits 3 across most back seats—perfect for growing families. Getting your little one in and out of the car is quick and simple with ClipQuik, our magnetic chest clip that opens with 1 hand. This grows-with-me car seat features QuikFit, a 10-position headrest and harness system that adjusts with 1 hand without needing to rethread the harness. The Kani infant-to-toddler car seat has ReclineFit, the 5-position adjustable base with 1-hand recline for your little one’s comfort and a secure fit in your vehicle. Key to the design of our car seat are the premium fabrics. EcoCare is our future-friendly, 100% recycled fabric made from plastic bottles. The yarn produced is soft, comfortable, and breathable—perfect for your little one. All fabrics are machine-washable and dryer-safe. Our soft, plush PureCosi fabric is made without added fire retardant treatment, which is better for both your child and our planet. When your little one reaches the big kid stage, an intuitive 1-hand release converts the Kani all-in-one into a backless booster car seat in seconds. Engineered and tested to meet or exceed federal safety standards. Meets federal Side Impact standard. Actual fit may vary. Not all children will comfortably fit in the car seat for the full weight and height ranges listed.
KANI 4-IN-1 CONVERTIBLE CAR SEAT 4 modes of use: rear-facing infant car seat (5–40 lbs., 19″–40″), forward-facing carseat (30–65 lbs., 34.4″–49″), belt-positioning booster (40–100 lbs., 43.4″–52″), backless booster car seat (40–100 lbs., 43.4″–57″).
PERFECT FOR GROWING FAMILIES This car seat for babies and kids features a slim car seat design that fits 3 across most vehicle back seats.
FEATURING ECOCARE Our premium, future-friendly, 100%-recycled fabric made from plastic bottles. The yarn produced is soft, comfortable, and breathable––perfect for your little one. All car seat fabrics are machine-washable and dryer-safe.
PREMIUM CAR SEAT FABRICS FOR LITTLE ONE’S COMFORT Our ultra-soft, yet durable, PureCosi fabrics and padding are made without added fire retardant treatment, which is better for your child and our planet.
EASY IN-AND-OUT ClipQuik is our magnetic chest clip on the carseat that you can open 1-handed for easier buckling and unbuckling.
1-HANDED CONVENIENCE AND EASE OF USE QuikFit is our integrated headrest and harness system that adjust easily without rethreading the harness and offers 10 positions to support all growth stages.
DESIGNED TO MAKE TRANSITIONS SWIFT AND SIMPLE ReclineFit provides 5 reclining positions you can change 1-handed for little one’s comfort and a secure fit in your car. Intuitive 1-hand release converts this all-in-one into a backless booster in seconds.
IMPORTANT SAFETY INFORMATION Engineered and tested to meet or exceed federal safety standards. Meets federal Side Impact standard. Actual fit may vary. Not all children will comfortably fit in the carseat for the full weight and height ranges listed.
ADDITIONAL INFANT TO TODDLER CAR SEAT FEATURES YOU’LL LOVE Vegan leather accents on the car seat cover and the 2 easy-to-clean, removable BPA-free cup holders. 1-click LATCH connectors for easier installation.
6 reviews for Maxi-Cosi Kani 4-in-1 Infant Kids Convertible Car Seat, Rear-Facing, Forward-Facing, Booster, Slim 3-Across Fit, Magnetic Buckle, 5-Position Recline, Fits 5-100 lbs, 19-57 in, Caspian Caviar
Fast, Reliable, and Convenient
Enjoy seamless delivery with Amazon Store. Whether you're shopping for everyday essentials, electronics, fashion, or gifts, your order is delivered straight to your door—fast and hassle-free. With options like Standard Delivery, Express Shipping, and even Same-Day Delivery in select areas, Amazon makes it easier than ever to get what you need when you need it.
Richard Surber –
Fantastic car seat!
This car seat has it all! It is ready to go from day one to young toddlers! Currently my 18 month old son is using it and I’m eventually going to change it to be a front facing orientation as he is starting to get tall and his feet are going to eventually get cramped. The nice thing about this car seat is it converts into a booster seat for when your child no longer needs to be strapped into the seat. I’m really pleased with this car seat. It looks really sturdy and comfortable and my son hasn’t ever complained about being put in it.
Ron Cazier –
Quality, safe comfortable
This is a very nice, secure and safe car seat. It will accommodate my grandbaby as he grows. We currently have it set with all of the cushions to accommodate our 5-month-old. Over time we can remove some of those cushions to accommodate his growth, without having to buy new seats.We’re currently using it in the rear-facing mode. The harness is very secure. Right now with the baby being bundled up in a jacket and layers, it takes a minute to get him strapped in. I think it would be easier to connect his harness if I first released it to lengthen the straps.The seat is well padded, and though he fusses as it takes a minute to get him strapped in, he then quickly settles down and seems very comfortable. He frequently falls asleep in the car seatSeveral things to be aware of:- The initial setup wasn’t very easy. Partly because this seat can be used in different ways (rear-facing, forward facing, booster, etc ), the manual is pretty thick and thus takes more time to understand and get it set up correctly.- There is a release button at the base of the seat that allows you to pull the straps to loosen them. But the button is not particularly easy to find or depress in order to loosen the straps.- There is also a button that releases the harness clasp, allowing you to take the baby out of the car seat. It is situated low near the seat and is probably intentionally a little bit hard to depress in order to avoid accidental release. Just be aware that it’s not just an easy push and release button.
Angelina Carbone –
Love it!
I absolutely love that this car seat is chemical free – that is the main reason that we stick with maxi cosi. The seat is wide, comfortable and my child seems to like it a lot better than her infant car seat. The magnet clip and the release button do take a couple tries to get used to, but overall we love it!
Kelsey –
Cute but not practical
This car seat is beautiful but honestly not my favorite.The setup wasn’t easy. Took a while to go through the manual and make sure everything was correct. For reference, I also have a Graco slim fit 3 in 1, and that was a piece of cake compared to this.The button at the base of the seat that allows you to pull the straps to loosen them is not easy to find or push in to loosen the straps.The straps get twisted very easily when trying to buckle baby in.Another thing, there’s no level indicator besides a line on the side of the seat, and it is not easy to tell if it’s level based on that.I know it’s cute but save some money and go practical! I wish I had.
Emy –
Great all-in-one car seat!
This is a really great convertible car seat that’s designed to grow with your child. It goes from infant to forward-facing and all the way to a booster (around 7–8 years old, depending on height and weight), which is a huge plus because you don’t have to keep buying new car seats at every stage. It truly covers everything in one seat.I needed a seat for a second car I’m starting to use more often, and this option made a lot of sense since it covers multiple stages. It feels like a smart long-term purchase rather than something you’ll outgrow quickly and need to replace.It has some really nice, thoughtful features, like a magnetic buckle that’s designed to make clipping in easier, two cup holders (because one is never enough), and machine-washable fabric, which is a huge plus for a seat that gets used every day.The only thing I wish it had is anchors in booster mode. It’s not a dealbreaker at all, but it would make an already great seat feel completely top-notch.Overall, this car seat feels really well thought out and convenient for everyday use. It’s made by a reputable brand, which gives you that extra peace of mind when it comes to safety, and its a great value being you won’t need another car seat again!
Customer Review –
Great car seat that grows from newborn to 8 years of age
This car seat is engineered for optimal space efficiency, fitting seamlessly in the back seat of my Honda CRV. I can accommodate two other grandchildren on either side of the car seat, which is securely positioned in the middle seat. The installation process was straightforward and secure. I still opted to have it inspected at my local police station to ensure it was installed correctly. This is the 4-in-1 car seat that begins in a rear-facing position for up to one year, transitions to forward-facing, then shifts to a high back booster seat, and ultimately converts to a backless booster seat. Having one car seat that serves all these stages is remarkable and conserves both time and money. The fabric is soft, ensuring that the baby is very comfortable.