Fit4 4-in-1 Convertible Car Seat - Onyx in Onyx


Item No. 05079645240070

Fit4 4-in-1 Convertible Car Seat - Onyx

Sale Price$349.99


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Additional Information


Fit to Grow

Fit to Grow

FitKit System: 4-stage construction with easy-remove layers provide optimal fit and comfort for your child as they grow

Best in Class Headrest

Best in Class Headrest

10-position headrest and 5-point harness adjust in height simultaneously to accommodate maximum growth

9-Position Recline

9-Position Recline

ReclineSure offers a range of recline options at every stage to provide the best vehicle fit and maximize kid comfort

Easiest to Install

Easiest to Install

SuperCinch LATCH tightener uses 4 times the force to achieve a tight and secure fit using a fraction of the effort

DuoGuard Protection

DuoGuard Protection

A steel-reinforced frame and EPS energy-absorbing foam surround the head and torso throughout every stage

Space-Saving FIT

Space-Saving FIT

A slim design and CupFolders free up valuable space in the backseat

Seat Belt Installation

Seat Belt Installation

A secure installation using the vehicle seat belt with LockSure® easy-thread belt path and built-in lock offs


Day One to Year Ten
The Chicco Fit4 4-In-1 , designed to deliver premier child fit and comfort at each unique stage, makes it easy to correctly secure your child from birth through big kid booster. Trusted, easy-to-use installation and safety features unique to Chicco combine with an innovative 4-Stage FitKit System, for ultimate convenience and peace of mind as your baby grows to age ten.

One Car Seat – 4 Stages to Grow
The 4-Stage FitKit System provides optimal fit and comfort through multi-staged construction and easy-to-remove layers, providing more room to grow through each unique stage. Combined with a 10-position easy-adjust headrest and 9 recline positions, your child will be riding in comfort as they grow, correctly secured in each stage:

Chicco Fit4 Stage 1
Chicco Fit4 Stage 2
Chicco Fit4 Stage 3
Chicco Fit4 Stage 4

Easiest All-in-One to Install Correctly
Chicco-exclusive installation features including leveling system, bubble levels, force-multiplying LATCH tightener and belt-tightening system combine to make Fit4 the easiest all-in-one car seat to install correctly. Slim design and space-saving CupFolders make Fit4 easy to fit and secure inside your vehicle.

Protection at Every Stage
provides two layers of protection with a steel-reinforced frame and that surround the head and torso throughout every stage. A 10-position headrest adjusts in height simultaneously with the 5-point harness to accommodate maximum growth, for best in class protection from birth through booster.
As your child grows, scan the QR Code on the side of the car seat or visit for quick and easy stage transition instructions – online help from Chicco always there to help guide you every step of the way.

  • The best FIT from day 1 to year 10 – for peace of mind and convenience from birth to booster
  • 4-stage FitKit System includes infant positioner, toddler pad, FitKit core and deluxe shoulder pad
  • 9-position ReclineSure® leveling system
  • Best in class 10-position headrest
  • SuperCinch® LATCH tightener
  • DuoGuard® head & torso protection
  • Steel-reinforced frame
  • RideRight® bubble levels
  • LockSure® steel-reinforced seat belt locking system
  • Slim design and space-saving CupFolders with push-button removal
  • Machine washable fabrics
  • Easy access QR code and transition guide

The Fit4 is designed for children between 4-100 lbs. and up to 57" tall.

Care and Maintenance
Machine wash in cold water using mild detergent. Hang to dry. For complete care and maintenance instructions, refer to the product’s instruction manual.



Introducing the Fit4

Fit4 Features

Setting up the Fit4 for Stage 1

Setting up the Fit4 for Stage 2

Setting up the Fit4 for Stage 3

Setting up the Fit4 for Stage 4

Installing for Rear Facing with LATCH System

Installing for Rear Facing with Seatbelt

Installing for Forward Facing with LATCH System

Installing for Forward Facing with Seatbelt

Removing the Fit4 Fabrics

Installing the Fit4 Fabrics

Onyx Fashion


Classic and chic, the Onyx fashion delivers straightforward style in a quintessential combination that's sure to please. Black jersey knit covers the main seatpad, while the Toddler Pad features a grey textured moisture-wicking knit to help keep your little one comfortable on all your adventures.


Assembled Dimensions (L x W x H): 21.5" x 19" x 26.5"

Assembled Product Weight: 25 lbs.

Ship Weight: 29.5 lbs.

Carton Dimensions (L x W x H): 27.5" x 22.5" x 19.75"

Harness Mode - Rear-Facing 4-40 lbs
Harness Mode - Forward-Facing 25-65 lbs
Booster Mode - High Back 40-100 lbs
Booster Mode - Backless -
LATCH SuperCinch®
Seat Belt Installation LockSure
Recline Positions 9
Product Weight 25 lbs
Product Total Width 19"
Total Harness Slot Height 18.5"
Total Belt-Positioning Clip Height 21"
Product Interior Width (Shoulder) 13"
Product Interior Width (Hips) 12"
Product Interior Seat Depth 14.5"
Product Max Seated Height 27"
Assembled Product Max Seat Back Height 33.5"
Product Depth (Footprint) 21.5"
Height Adjust Positions 10
Crotch Positions 2
RF Child Max Height Capacity 43"
FF Child Max Height Capacity 54"
Booster Child Height Capacity 38-57"
Product Manuals


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