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Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Kani 4-in-1 Convertible Car Seat
Maxi-Cosi

Kani 4-in-1 Convertible Car Seat

$379.99
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  • This product ships for free
  • Ships as soon as today - see details Orders placed Monday - Friday before 3pm ET will ship from the warehouse same day. Orders placed after 3pm ET will ship the following business day.
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2026-02-23 00:00:00

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This item is not returnable or refundable. Don't worry! If your order arrives damaged or defective, please notify us within 24h [adhering to White Glove delivery instructions if applicable] to obtain replacement parts or units completely free of charge. Modern Nursery simply chooses to follow the strictest of safety and health guidelines and can't accept returns for this item. See our Refund Policy

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No Added Formaldehyde

Formaldehyde is something you want to stay away from because it is a cancerous, strong-smelling, colorless gas commonly found in pressed-wood products.

Phthalates Free

Phthalates disrupt the body's hormones and some are known carcinogens. The chemicals from baby gear and wallpaper can be ingested, inhaled or absorbed.

No PFAS

PFAS-free baby products do not contain poly-fluorinated alkyl substances which are a group of around 4,700 industrial chemicals that can be found everywhere around us.

Recycled Materials

Recycling is a trend, and we love it! Consumerism is a huge problem today, and there are ways to combat the issue. Recycled materials help keep our landfills clean, and also saves energy, water and money.

No Added Fire Retardants | Potential Trace Carryover

While no products sold on Modern Nursery have any added chemical fire retardants, some may be manufactured in the same facilities as others that do and therefore may have potentially been exposed to FR chemicals. If you're looking for a product that is 100% FR-free, we have those too - just look for the Fire Retardant Free badge on the listing!

The Maxi-Cosi Kani 4-in-1 Convertible Car Seat is the only car seat your little one will ever need from that first ride home as a newborn to the “I can buckle myself!” big-kid years. Designed with growing families in mind, Kani’s slim profile fits three across most back seats, so everyone gets a spot.

As your child grows, the Maxi-Cosi Kani 4-in-1 Convertible Car Seat keeps up effortlessly. QuikFit’s 10-position headrest and harness adjust together, no rethreading needed! The ReclineFit design offers five comfy recline positions with an easy one-hand adjustment, so every ride feels comfy at any stage. The ClipQuik™ features a magnetic chest clip that pops open with just one hand that makes getting your kiddo in and out a breeze.

Comfort meets conscience with premium EcoCare fabric - made from 100% recycled plastic bottles, creating a soft, breathable seat that’s gentle on your little one's skin and the planet. Plus, the plush PureCosi™ fabric is made without added fire-retardant treatments, making sure your kiddo enjoys a clean environment without any nasty chemicals catching a ride!

Features:

  • Car seat design fits 3 carseats across most large vehicle back seats (Actual fit may vary depending on the model of the vehicle.)
  • 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 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
  • Removable, soft, plush infant head pillow and cushions provide extra support
  • Convertible car seat cover has vegan-leather trim
  • 1-click LATCH connectors for easy and secure installation
  • Engineered and tested to meet or exceed federal safety standards
  • Meets federal Side Impact standard

Recommended usage:

  • 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")
  • Backless booster seat (40–100 lbs., 43.4"–57")

Dimensions: (Max) 30.25"H x 19"W x 29”D, (Min)19.25"H x 19"W x 23.25"D

Weight: 23.2 lbs

Free of added fire retardants

Maxi-Cosi is fully transparent about their manufacturing process and guarantee that their car seats are completely free of any added fire retardants. However, their products are manufactured in the same facilities as other gear that does contain FRs so there is a chance of potential FR carryover. We believe in full disclosure and transparency and appreciate Maxi-Cosi's honesty and effort to produce fire resistant products without the addition of chemical fire retardants.

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