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Ships within 48 hours · Estimated delivery Jul 3 - Jul 8
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Description
maxi cosi car seat 4 in 1 MAXI COSI Kani 4-In-1 Convertible Car SeatA four in one convertible car seat that accommodates children from birth through age ten, with an ultra slim profile for three across seating and auto magnetic chest clip for fast, secure buckling. Key Features Four Modes of Use: Rear facing infant seat (2. 318 kg 540 lbs), forward facing harness seat (1029. 5 kg 2265 lbs), high back belt positioning booster (1845 kg 40100 lbs), and backless booster (1845 kg 40100 lbs). Ultra Slim Design: Narrow
A four-in-one convertible car seat that accommodates children from birth through age ten, with an ultra-slim profile for three-across seating and auto-magnetic chest clip for fast, secure buckling.
Key Features
- Four Modes of Use: Rear-facing infant seat (2.3–18 kg / 5–40 lbs), forward-facing harness seat (10–29.5 kg / 22–65 lbs), high-back belt-positioning booster (18–45 kg / 40–100 lbs), and backless booster (18–45 kg / 40–100 lbs).
- Ultra-Slim Design: Narrow profile allows three car seats to fit side by side across the back seat in most vehicles without compromising safety or comfort.
- ClipQuick Auto-Magnetic Chest Clip: Magnetically guided buckle snaps into place for quick, frustration-free fastening — even with a squirming child.
- 10-Position Headrest with No-Rethread Harness: One-hand headrest lift automatically adjusts the harness straps to match your child's growth, eliminating the need to manually rethread.
- One-Click UAS Installation: Self-retracting UAS (LATCH) connectors simplify installation for a confident, secure fit in your vehicle.
- Machine-Washable EcoCare Fabrics: Seat cover made from 100% recycled plastic bottles is soft, breathable, machine washable, and dryer safe for easy care.
Specifications
| Brand | Maxi-Cosi |
| Product Type | Convertible Car Seat (4-in-1) |
| Rear-Facing Weight Range | 2.3–18 kg (5–40 lbs) |
| Forward-Facing Weight Range | 10–29.5 kg (22–65 lbs) |
| Belt-Positioning Booster Weight | 18–45 kg (40–100 lbs) |
| Backless Booster Weight | 18–45 kg (40–100 lbs) |
| Headrest Positions | 10 |
| Recline Positions | 5 |
| Installation | One-click UAS (LATCH) connectors |
| Harness | 5-point with no-rethread adjustment |
| Cup Holders | 2 removable, BPA-free, vegan leather wrapped |
| Fabric | EcoCare 100% recycled; machine washable & dryer safe |
| Safety | Meets or exceeds federal safety standards |
Frequently Asked Questions
How long can my child use the Maxi-Cosi Kani?
The Kani is designed to serve your child from birth through approximately 10 years of age, spanning four distinct modes. It starts as a rear-facing seat for infants and transitions all the way to a backless booster for children up to 45 kg (100 lbs).
Can the Kani fit three-across in my vehicle?
Yes. The Kani features an ultra-slim profile specifically engineered to allow three car seats across the back seat of most vehicles. Actual fit may vary depending on your vehicle's interior dimensions.
How do I convert the Kani to backless booster mode?
An intuitive one-hand release mechanism lets you detach the seat back in seconds, instantly converting the Kani into a lightweight backless booster without tools or complicated steps.
Warranty: Maxi-Cosi products are backed by a limited warranty. Please visit the Maxi-Cosi website or contact their customer support team for complete warranty terms, coverage details, and any registration requirements that may apply.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 2395 reviews
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Product Reviews
★★★★★ 5
Let this restoration kit light up your life
Size: 1 Kit
I have a car that is 24 years old and is my daily driver. Understandably, the headlight lenses have deteriorated to the point where I was using my brights exclusively at night yet never being flashed to turn them down. I got quotes between 60-80 dollars per headlight for restoration which I just wasn't willing to pay so I decided on this kit to try restoring them myself. I read reviews before I ever make a decision on a product and noticed many reviewers of other products stated that this product works better so I went ahead and purchased it. Man, am I glad I did!!!
The kit arrived late this afternoon, I opened it, READ AND FOLLOWED THE INSTRUCTIONS and within 1 1/2 hours had turned a travesty into a triumph. I started by taping around both lights with 1 inch blue painters tape to protect the paint around the lights. The kit comes with everything necessary to remove most moderate deterioration but be sure to purchase one that corresponds with your actual situation. I believe my lenses were far beyond "moderate" but with some heavy elbow grease, the correct use of both supplied sanding disks and my hose set on "mist" I was able to sand off years of damage leaving behind a smooth, albeit opaque surface. After making sure everything was totally dry using both towels and my leaf blower, I was ready for the Magic!!! I opened the first clearcoat package (while wearing the provided glove) and lightly but steadily applied the liquid with the supplied towelette and the required 50% overlapping passes. The opaque lenses instantly turned clear upon contact with the clearcoat. After waiting around 25 minutes to be sure the lenses were completely dry I opened the second package of clearcoat and applied it in the same manner as the first. I had no misses or problems with my first coat but for those who do...NOW is the time to make corrections, NOT during the first coat process. Leave things to dry for around an hour and you are done.
The end result? AWESOME, INCREDIBLE, UNBELIEVABLE...shall I go on??? Not necessary, but I can say I am thrilled with the outcome. My wife said the lights look new and I agree, there is a night and day difference between before and after.
Only time will tell how long the restoration lasts but for now I am very very happy with the results I got from this 3M product. I highly recommend it to anybody who can read, understand and follow the instructions. 5 stars all the way on this one!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 24, 2025
★★★★★ 5
Excellent 3M Headlight Restoration Kit!
Size: 1 Kit, Size: 1 Kit
Better than expected results. This 3M Kit needs no drill; all done by hand. Check out their videos on YouTube; follow the easy instructions. This $10 3M Kit, an hour and a half of my time, saved me over $300! What a serious savings! Thank you 3M for another fantastic product!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026
★★★★★ 5
Affordable and it works !
Size: 1 Kit, Size: 1 Kit
Works great price is decent and easy to use
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Clean foggy headlights with ease.
Item Package Quantity: 1
I was very impressed with the results. Easy and fast to use. Really cleaned up the foggy appearance. I will definitely use it again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
Great product
Item Package Quantity: 1
This product works awesome. Fast and easy. Customer service is to work with as well. Yes, I recommend this product. Head lights look better and visibility greatly improved.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 29, 2026
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