Maxi-Cosi Kani 4-in-1 Convertible Car Seat, Caspian Caviar
Maxi-Cosi Kani 4-in-1 Convertible Car Seat, Caspian Caviar
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Maxi-Cosi Kani 4-in-1 Convertible Car Seat, Caspian Caviar

29 ratings

Key item features

  • All in one car seat from birth to 10 years with 4 modes of use: rear-facing car seat (5–40 lbs., 19"–40"), forward-facing car seat (30–65 lbs., 34.4"–49"), belt-positioning high back booster seat (40–100 lbs., 43.4"–52"), and backless booster seat (40–100 lbs., 43.4"–57")
  • Slim car seat design fits 3 carseats across most vehicle back seats
  • Featuring EcoCare––100% recycled fabrics made from plastic bottles. The yarn produced is soft, comfortable, and breathable
  • ClipQuik™ magnetic chest clip that opens with 1 hand for quick and easy buckling
  • QuikFit is our integrated headrest and harness system that adjust easily without rethreading the harness and offers 10 positions to support all growth stages
  • Intuitive 1-hand release converts the grow with me car seat into a backless booster in seconds
  • ReclineFit provides 5 reclining positions for a relaxing and comfy ride for your little one
  • 2 removable cup holders have vegan leather accents and are top-rack dishwasher-safe

Specs

Safety harness style, 5-Point HarnessChild car seat style, Convertible Car SeatsCar seat facing direction, ConvertibleForward-facing minimum weight, 30 lbForward-facing maximum weight, 65 lbMaximum height, 57 in

About this item

Product details

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 for babies and kids 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.And our soft, plush PureCosiTM 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, intuitive, 1-hand release converts the Kani all-in-one into a backless booster car seat in just 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.
  • All in one car seat from birth to 10 years with 4 modes of use: rear-facing car seat (5–40 lbs., 19"–40"), forward-facing car seat (30–65 lbs., 34.4"–49"), belt-positioning high back booster seat (40–100 lbs., 43.4"–52"), and backless booster seat (40–100 lbs., 43.4"–57")
  • Slim car seat design fits 3 carseats across most vehicle back seats
  • Featuring EcoCare––100% recycled fabrics made from plastic bottles. The yarn produced is soft, comfortable, and breathable
  • ClipQuik™ magnetic chest clip that opens with 1 hand for quick and easy buckling
  • QuikFit is our integrated headrest and harness system that adjust easily without rethreading the harness and offers 10 positions to support all growth stages
  • Intuitive 1-hand release converts the grow with me car seat into a backless booster in seconds
  • ReclineFit provides 5 reclining positions for a relaxing and comfy ride for your little one
  • 2 removable cup holders have vegan leather accents and are top-rack dishwasher-safe
info:
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Specifications

Safety harness style

5-Point Harness

Child car seat style

Convertible Car Seats

Car seat facing direction

Convertible

Forward-facing minimum weight

30 lb

Directions

Fabric Care Instructions

Machine Washable

Warranty

Warranty information

This product is warranted against defective materials or workmanship for 1 year from the date of original purchase.

Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.

Customer ratings & reviews

4.5 out of 5 stars
stars
29 ratings28 reviews
How item rating is calculated
  1. 5 stars66% (19)
  2. 4 stars28% (8)
  3. 3 stars3% (1)
  4. 2 stars0% (0)
  5. 1 star3% (1)

Reviews summary

Pros

  • : Features a space-saving profile.
  • : The seat saves space and allows another seat beside it.
  • : Offers impressive quality at a reasonable cost.
  • : Offers reliable child protection.
  • : Designed for comfort with a slim profile.
  • : Quick process with clear instructions.
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Showing 1-3 of 28 reviews

Nov 4, 2025
Reviewer name: Maggie
5 out of 5 stars
5 out of 5 stars review

Carseat is butter soft and ultra comfortable

[This review was collected as part of a promotion.] I was given this car seat to try as part of the Stellar Product Testing Panel. This is the Kani 4 in 1. The materials are ultra soft like you would expect from Maxi Cosi. I bought the Maxi Cosi Pria 85 for my oldest child back in 2018, so this is a nice updated version we're using for my littlest addition. I love the slim design that fits my little sedan, even with another carseat in the back. It's roomy enough for them to use for years and years. One of my favorite parts of the carseat is the magnetic buckle closure. It takes a bit to get used to if you're not used to that kind of feature. I really can't say enough how soft the material is and it feels easy to clean. Another great feature is two cup holders, one we use for water and another we use for a cup of snacks. The crevaces in the carseat make it easy to vacuum out those said snacks. I love the black color which is sure to hide stains really well, unlike my other grey carseat. The buckle also feels very secure. The only drawback to this carseat that I can possibly see is that it's relatively heavy, but it's also feeling much sturdier than my other carseat. I'd feel comfortable bringing this on an airplane and have them handle it, unlike my other one from a different brand. The overall value is top notch right here. This is a carseat that is built to last for all ages. It goes without saying that the carseat manual is easy to read, so installation is a breeze, even for a first time parent. I am glad we have this!

Review from doreljuvenile-maxicosi
Helpful?3IETTM640U2A17419409633
Nov 4, 2025
Reviewer name: Becca
5 out of 5 stars
5 out of 5 stars review

Convertible Car Seat that Delivers on Every Level

[This review was collected as part of a promotion.] Thank you to the Stellar Product Testing Panel for providing me with this car seat. The Maxi-Cosi Kani 4-in-1 offers impressive quality at an amazing value. The car seat has a slim, space-saving design which a top priority as a small vehicle owner! It fits well in my back seat, even next to another car seat. In addition, the installation process was surprisingly simple; within minutes I was able to get everything level and tight. My favorite feature by far is the 4-in-1 mode. The car seat can transition into four stages: from rear-facing to forward-facing, then to high-back booster and a backless booster seat. This is highly convenient as it means we can avoid buying multiple car seats as our child grows. Overall, the Maxi-Cosi Kani 4-in-1 has been an excellent addition to our car. I recommend it to any parent looking for a long-term car seat!

Review from doreljuvenile-maxicosi
Helpful?3IETTM640U2A17419409633
Nov 1, 2025
Reviewer name: Deskins14
5 out of 5 stars
5 out of 5 stars review

The new LUX style car seat

[This review was collected as part of a promotion.] I think of the overall value of this car seat is right on point for the luxury feel without feeling like something is overpriced. The fabric was very nice and the details from the actual car seat to the removable cup holders was a very nice neutral design. I really like the slim, 4-in-1 design because as I was installing it, I noticed that there was actually still space on the side of my captain chair as well as behind the seat. I compared it to another car seat that we have and it really does make for a big difference when space is limited. Something else I noticed was that as my baby grows, it has an easy hand grasp at the back to recline or incline the car seat depending on what you need. It was simple for figure out and I can foresee this being handy as we reach the next level in aging up with this carseat. The installation process was very easy. The built in latch mechanism is GOLD when trying to install and even uninstall. It makes it simplified all around especially when needing to move around car seats with multiple kids. My favorite feature of this car seat has to be that the chest clip buckle is a clip, but magnetic! I have not seen this yet on a car seat and I actually love it! Thank you to the Stellar Product Testing Panel for providing me with this car seat.

Review from doreljuvenile-maxicosi
Helpful?3IETTM640U2A17419409633
Current price is $379.99
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