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Description
maxi cosi 4 years plus 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
4.7 ★★★★★
Based on 2091 reviews
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Product Reviews
★★★★★ 5
foundational, dense
Format: Paperback
An extremely important book for anyone interested in the humanities or the sciences, particularly astronomy. It's a foundational work to help guide us towards understanding all of the past, present, and possibly future of humanity. The authors' style is a bit dense and may be more greatly appreciated by polyglots, but they get their points across extremely thoroughly.
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Reviewed in the United States on January 18, 2026
★★★★★ 5
Deepest Wisdom Within
Format: Paperback
Fantastic and engaging read. A must for serious comparison into myths. Esoteric wisdom found along paths of clear knowledge from the collective nature source of all epochal imagery (hidden history of the Ancients) unfolds within. Helpful in putting much confusion of modernity into context. Causes one to consider the scientific accomplishments of previous cultures rather than pondering thru occulted and poorly choreographed explanations about how such advanced civilizations achieved their grandeur; which were obviously far more advanced technologically than NASA is by light years! We are re-discovering what many peoples already understood long long ago. Recorded and referenced histories go back 100s of thsds of years and more. The book does not make judgements upon written records or of oral traditions but would implore readers come to a self realization by discovering information that causes one to expand their own minds and concur with known facts and of what remains from the past. High above the casual status quo official, sidetracked narratives that lead to reckless abandon and despair. Dialed in and deep! A real treasure trove. Highly recommended.
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Reviewed in the United States on April 15, 2019
★★★★★ 5
Packed with knowledge and mystery!
Format: Paperback
I gave this book 5 stars because this is an exhaustive compendium of mythological knowledge in one short (505 pages) volume. It is professorial in writing design, which includes excerpts in Latin, French and German, as well as the many words and phrases from India, Mesopotamia, northern Europe, Pacifiic islands and so forth. I recommend reading the appendices in the order they are referred to in the main text. I read them last and did not glean an understanding that accompanied the chapters. All in all, this is a researcher's book with 29 pages of bibliography material, with extensive notes at the bottom of the pages so one can stay on text. Good luck and enjoy the perusal of mythology, astronomy/astrology, history, poetry and fable. Great reading!
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Reviewed in the United States on September 8, 2015
★★★★★ 4
Interesting connections made.
Format: Paperback
I bought this because or had been referred to in several other excellent books I've read. Very scholarly and good case made but a bit dry and overdone/redundant at times when making a point. And if you've studied a lot, nothing really new revealed- but if just starting down this road, some great comparisons made.
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Reviewed in the United States on August 19, 2025
★★★★★ 5
Seminal
Format: Paperback
As many have noted, Hamlet's Mill is not an "easy" read, but it is an absolutely worthwhile experience not only to read but to re-read this seminal thesis on the transmission of ancient astronomical knowledge through mythology and legend. Perhaps the fact that a reader must wrestle with this text is part of the reason that it has generated so many fruitful inquiries and theories by later authors. The entire book is rich with ideas, many of which the authors drop and then pick up again and again later in the text, some of which are simply left for later analysts to pursue further on their own. Slice into it at any point and you will find a rich vein of material that can suggest new avenues for you to explore in the ancient history and literatures of the world. Sometimes an easy read or a text that hands you all of its answers and does the work for you is not "what the doctor ordered." Hamlet's Mill definitely makes more sense the second and even third time through. That in and of itself makes this book worth your while -- it's a gift that keeps on giving, a book you can keep on reading, even after you reach the end!
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Reviewed in the United States on April 21, 2011